253345536 has 72 divisors (see below), whose sum is σ = 749207760. Its totient is φ = 84446208.

The previous prime is 253345523. The next prime is 253345541. The reversal of 253345536 is 635543352.

253345536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×253345536² = 128367921222254592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 253345536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11415 + ... + 25238.

Almost surely, 2^253345536 is an apocalyptic number.

It is an amenable number.

253345536 is an abundant number, since it is smaller than the sum of its proper divisors (495862224).

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

253345536 is an equidigital number, since it uses as much as digits as its factorization.

253345536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36678 (or 36658 counting only the distinct ones).

The product of its digits is 162000, while the sum is 36.

The square root of 253345536 is about 15916.8318455652. The cubic root of 253345536 is about 632.7581565295.

Adding to 253345536 its reverse (635543352), we get a palindrome (888888888).

The spelling of 253345536 in words is "two hundred fifty-three million, three hundred forty-five thousand, five hundred thirty-six".