252155550 has 96 divisors (see below), whose sum is σ = 651101184. Its totient is φ = 64512000.

The previous prime is 252155549. The next prime is 252155599. The reversal of 252155550 is 55551252.

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 47 ways as a sum of consecutive naturals, for example, 981022 + ... + 981278.

It is an arithmetic number, because the mean of its divisors is an integer number (6782304).

Almost surely, 2^252155550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252155550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325550592).

252155550 is an abundant number, since it is smaller than the sum of its proper divisors (398945634).

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

252155550 is a wasteful number, since it uses less digits than its factorization.

252155550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 252155550 is about 15879.4064750544. The cubic root of 252155550 is about 631.7658946399.

The spelling of 252155550 in words is "two hundred fifty-two million, one hundred fifty-five thousand, five hundred fifty".