253145530122550 has 96 divisors (see below), whose sum is σ = 509338226517120. Its totient is φ = 93051257241600.

The previous prime is 253145530122539. The next prime is 253145530122587. The reversal of 253145530122550 is 55221035541352.

It is a junction number, because it is equal to n+sod(n) for n = 253145530122497 and 253145530122506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 488332294 + ... + 488850406.

It is an arithmetic number, because the mean of its divisors is an integer number (5305606526220).

Almost surely, 2^{253145530122550} is an apocalyptic number.

253145530122550 is an abundant number, since it is smaller than the sum of its proper divisors (256192696394570).

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

253145530122550 is a wasteful number, since it uses less digits than its factorization.

253145530122550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521498 (or 521493 counting only the distinct ones).

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

The spelling of 253145530122550 in words is "two hundred fifty-three trillion, one hundred forty-five billion, five hundred thirty million, one hundred twenty-two thousand, five hundred fifty".