155457265 has 16 divisors (see below), whose sum is σ = 197879760. Its totient is φ = 116838400.

The previous prime is 155457209. The next prime is 155457283. The reversal of 155457265 is 562754551.

It can be written as a sum of positive squares in 8 ways, for example, as 11048976 + 144408289 = 3324^2 + 12017^2 .

It is not a de Polignac number, because 155457265 - 2¹⁵ = 155424497 is a prime.

It is a super-2 number, since 2×155457265² = 48333922482560450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58281 + ... + 60889.

It is an arithmetic number, because the mean of its divisors is an integer number (12367485).

Almost surely, 2^155457265 is an apocalyptic number.

It is an amenable number.

155457265 is a deficient number, since it is larger than the sum of its proper divisors (42422495).

155457265 is a wasteful number, since it uses less digits than its factorization.

155457265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332.

The product of its digits is 210000, while the sum is 40.

The square root of 155457265 is about 12468.2502782066. The cubic root of 155457265 is about 537.6962499525.

The spelling of 155457265 in words is "one hundred fifty-five million, four hundred fifty-seven thousand, two hundred sixty-five".