155503264 has 36 divisors (see below), whose sum is σ = 356133834. Its totient is φ = 66643584.

The previous prime is 155503261. The next prime is 155503279. The reversal of 155503264 is 462305551.

It can be written as a sum of positive squares in only one way, i.e., 151093264 + 4410000 = 12292^2 + 2100^2 .

It is a super-2 number, since 2×155503264² = 48362530229307392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155503261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48019 + ... + 51154.

Almost surely, 2^155503264 is an apocalyptic number.

155503264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155503264 is an abundant number, since it is smaller than the sum of its proper divisors (200630570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155503264 is an equidigital number, since it uses as much as digits as its factorization.

155503264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99197 (or 99182 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 155503264 is about 12470.0947871297. The cubic root of 155503264 is about 537.7492785682.

The spelling of 155503264 in words is "one hundred fifty-five million, five hundred three thousand, two hundred sixty-four".