155905153 has 2 divisors, whose sum is σ = 155905154. Its totient is φ = 155905152.

The previous prime is 155905117. The next prime is 155905187. The reversal of 155905153 is 351509551.

It is a happy number.

It is an a-pointer prime, because the next prime (155905187) can be obtained adding 155905153 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150111504 + 5793649 = 12252^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 155905153 - 2²⁵ = 122350721 is a prime.

It is not a weakly prime, because it can be changed into another prime (155905103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77952576 + 77952577.

It is an arithmetic number, because the mean of its divisors is an integer number (77952577).

Almost surely, 2^155905153 is an apocalyptic number.

It is an amenable number.

155905153 is a deficient number, since it is larger than the sum of its proper divisors (1).

155905153 is an equidigital number, since it uses as much as digits as its factorization.

155905153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16875, while the sum is 34.

The square root of 155905153 is about 12486.1985007447. The cubic root of 155905153 is about 538.2121404655.

The spelling of 155905153 in words is "one hundred fifty-five million, nine hundred five thousand, one hundred fifty-three".