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130001554 = 265000777
BaseRepresentation
bin1111011111110…
…10101010010010
3100001121202121101
413233322222102
5231240022204
620522215014
73135665164
oct757725222
9301552541
10130001554
1167423101
123765446a
1320c193c7
14133a0934
15b62dea4
hex7bfaa92

130001554 has 4 divisors (see below), whose sum is σ = 195002334. Its totient is φ = 65000776.

The previous prime is 130001503. The next prime is 130001561. The reversal of 130001554 is 455100031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455100031 = 736234247.

It can be written as a sum of positive squares in only one way, i.e., 83448225 + 46553329 = 9135^2 + 6823^2 .

130001554 is a modest number, since divided by 1554 gives 130 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32500387 + ... + 32500390.

Almost surely, 2130001554 is an apocalyptic number.

130001554 is a deficient number, since it is larger than the sum of its proper divisors (65000780).

130001554 is an equidigital number, since it uses as much as digits as its factorization.

130001554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65000779.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 130001554 is about 11401.8223981958. The cubic root of 130001554 is about 506.5817204273.

Adding to 130001554 its reverse (455100031), we get a palindrome (585101585).

The spelling of 130001554 in words is "one hundred thirty million, one thousand, five hundred fifty-four".

Divisors: 1 2 65000777 130001554