213525156 has 48 divisors (see below), whose sum is σ = 538570368. Its totient is φ = 65452800.

The previous prime is 213525149. The next prime is 213525163. The reversal of 213525156 is 651525312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213525149) and next prime (213525163).

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, 41401 + ... + 46271.

It is an arithmetic number, because the mean of its divisors is an integer number (11220216).

Almost surely, 2^213525156 is an apocalyptic number.

213525156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a pronic number, being equal to 14612×14613.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213525156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269285184).

213525156 is an abundant number, since it is smaller than the sum of its proper divisors (325045212).

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

213525156 is a wasteful number, since it uses less digits than its factorization.

213525156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172 (or 5170 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 213525156 is about 14612.4999914457. The cubic root of 213525156 is about 597.6996698504.

The spelling of 213525156 in words is "two hundred thirteen million, five hundred twenty-five thousand, one hundred fifty-six".