155364137 has 2 divisors, whose sum is σ = 155364138. Its totient is φ = 155364136.

The previous prime is 155364127. The next prime is 155364151. The reversal of 155364137 is 731463551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155276521 + 87616 = 12461^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 155364137 - 2²⁰ = 154315561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155364097 and 155364106.

It is not a weakly prime, because it can be changed into another prime (155364127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77682068 + 77682069.

It is an arithmetic number, because the mean of its divisors is an integer number (77682069).

Almost surely, 2^155364137 is an apocalyptic number.

It is an amenable number.

155364137 is a deficient number, since it is larger than the sum of its proper divisors (1).

155364137 is an equidigital number, since it uses as much as digits as its factorization.

155364137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 155364137 is about 12464.5151129115. The cubic root of 155364137 is about 537.5888579974.

The spelling of 155364137 in words is "one hundred fifty-five million, three hundred sixty-four thousand, one hundred thirty-seven".