52215492 has 48 divisors (see below), whose sum is σ = 140499072. Its totient is φ = 14784000.

The previous prime is 52215491. The next prime is 52215503. The reversal of 52215492 is 29451225.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (52215491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6742 + ... + 12242.

It is an arithmetic number, because the mean of its divisors is an integer number (2927064).

Almost surely, 2^52215492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52215492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70249536).

52215492 is an abundant number, since it is smaller than the sum of its proper divisors (88283580).

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

52215492 is a wasteful number, since it uses less digits than its factorization.

52215492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5626 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 52215492 is about 7226.0287848859. The cubic root of 52215492 is about 373.7659988752.

The spelling of 52215492 in words is "fifty-two million, two hundred fifteen thousand, four hundred ninety-two".