155622965 has 4 divisors (see below), whose sum is σ = 186747564. Its totient is φ = 124498368.

The previous prime is 155622959. The next prime is 155622967. The reversal of 155622965 is 569226551.

155622965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569226551 = 1117 ⋅509603.

It can be written as a sum of positive squares in 2 ways, for example, as 63904036 + 91718929 = 7994^2 + 9577^2 .

It is a cyclic number.

It is not a de Polignac number, because 155622965 - 2²⁰ = 154574389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155622967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15562292 + ... + 15562301.

It is an arithmetic number, because the mean of its divisors is an integer number (46686891).

Almost surely, 2^155622965 is an apocalyptic number.

It is an amenable number.

155622965 is a deficient number, since it is larger than the sum of its proper divisors (31124599).

155622965 is an equidigital number, since it uses as much as digits as its factorization.

155622965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31124598.

The product of its digits is 162000, while the sum is 41.

The square root of 155622965 is about 12474.8933863180. The cubic root of 155622965 is about 537.8872234050.

The spelling of 155622965 in words is "one hundred fifty-five million, six hundred twenty-two thousand, nine hundred sixty-five".