253564512550 has 12 divisors (see below), whose sum is σ = 471629993436. Its totient is φ = 101425805000.

The previous prime is 253564512533. The next prime is 253564512601. The reversal of 253564512550 is 55215465352.

It is a junction number, because it is equal to n+sod(n) for n = 253564512497 and 253564512506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2535645076 + ... + 2535645175.

It is an arithmetic number, because the mean of its divisors is an integer number (39302499453).

Almost surely, 2^253564512550 is an apocalyptic number.

253564512550 is a deficient number, since it is larger than the sum of its proper divisors (218065480886).

253564512550 is a wasteful number, since it uses less digits than its factorization.

253564512550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071290263 (or 5071290258 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 43.

The spelling of 253564512550 in words is "two hundred fifty-three billion, five hundred sixty-four million, five hundred twelve thousand, five hundred fifty".