253399356 has 36 divisors (see below), whose sum is σ = 732043312. Its totient is φ = 72399744.

The previous prime is 253399351. The next prime is 253399369. The reversal of 253399356 is 653993352.

253399356 is a `hidden beast` number, since 253 + 399 + 3 + 5 + 6 = 666.

253399356 is digitally balanced in base 2 and base 3, because in such bases 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 (36).

It is a super-2 number, since 2×253399356² = 128422467242429472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253399351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502525 + ... + 503028.

Almost surely, 2^253399356 is an apocalyptic number.

It is an amenable number.

253399356 is an abundant number, since it is smaller than the sum of its proper divisors (478643956).

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

253399356 is a wasteful number, since it uses less digits than its factorization.

253399356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005570 (or 1005565 counting only the distinct ones).

The product of its digits is 656100, while the sum is 45.

The square root of 253399356 is about 15918.5224188679. The cubic root of 253399356 is about 632.8029604671.

The spelling of 253399356 in words is "two hundred fifty-three million, three hundred ninety-nine thousand, three hundred fifty-six".