253557030 has 32 divisors (see below), whose sum is σ = 614817504. Its totient is φ = 66917376.

The previous prime is 253557019. The next prime is 253557049. The reversal of 253557030 is 30755352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40657 + ... + 46476.

It is an arithmetic number, because the mean of its divisors is an integer number (19213047).

Almost surely, 2^253557030 is an apocalyptic number.

253557030 is an abundant number, since it is smaller than the sum of its proper divisors (361260474).

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

253557030 is a wasteful number, since it uses less digits than its factorization.

253557030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87240.

The product of its (nonzero) digits is 15750, while the sum is 30.

The square root of 253557030 is about 15923.4741812206. The cubic root of 253557030 is about 632.9341840133.

It can be divided in two parts, 25355 and 7030, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 253557030 in words is "two hundred fifty-three million, five hundred fifty-seven thousand, thirty".