155151461 has 2 divisors, whose sum is σ = 155151462. Its totient is φ = 155151460.

The previous prime is 155151449. The next prime is 155151463. The reversal of 155151461 is 164151551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147136900 + 8014561 = 12130^2 + 2831^2 .

It is a cyclic number.

It is not a de Polignac number, because 155151461 - 2¹⁴ = 155135077 is a prime.

Together with 155151463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155151463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77575730 + 77575731.

It is an arithmetic number, because the mean of its divisors is an integer number (77575731).

Almost surely, 2^155151461 is an apocalyptic number.

It is an amenable number.

155151461 is a deficient number, since it is larger than the sum of its proper divisors (1).

155151461 is an equidigital number, since it uses as much as digits as its factorization.

155151461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000, while the sum is 29.

The square root of 155151461 is about 12455.9809328692. The cubic root of 155151461 is about 537.3434464560.

The spelling of 155151461 in words is "one hundred fifty-five million, one hundred fifty-one thousand, four hundred sixty-one".