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151628881 is a prime number
BaseRepresentation
bin10010000100110…
…10110001010001
3101120022112201111
421002122301101
5302304111011
623013533321
73520552465
oct1102326121
9346275644
10151628881
1178655028
1242944241
132554c441
14161d04a5
15d4a2121
hex909ac51

151628881 has 2 divisors, whose sum is σ = 151628882. Its totient is φ = 151628880.

The previous prime is 151628861. The next prime is 151628921. The reversal of 151628881 is 188826151.

It is an a-pointer prime, because the next prime (151628921) can be obtained adding 151628881 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141491025 + 10137856 = 11895^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 151628881 - 27 = 151628753 is a prime.

It is a super-2 number, since 2×1516288812 = 45982635106624322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151628801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75814440 + 75814441.

It is an arithmetic number, because the mean of its divisors is an integer number (75814441).

Almost surely, 2151628881 is an apocalyptic number.

It is an amenable number.

151628881 is a deficient number, since it is larger than the sum of its proper divisors (1).

151628881 is an equidigital number, since it uses as much as digits as its factorization.

151628881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 40.

The square root of 151628881 is about 12313.7679448656. The cubic root of 151628881 is about 533.2456360579.

The spelling of 151628881 in words is "one hundred fifty-one million, six hundred twenty-eight thousand, eight hundred eighty-one".