521295372 has 84 divisors (see below), whose sum is σ = 1464132040. Its totient is φ = 160398576.

The previous prime is 521295347. The next prime is 521295403. The reversal of 521295372 is 273592125.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (37800) is a multiple of the sum of its prime divisors (18).

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 40099638 + ... + 40099650.

Almost surely, 2^521295372 is an apocalyptic number.

521295372 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521295372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732066020).

521295372 is an abundant number, since it is smaller than the sum of its proper divisors (942836668).

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

521295372 is an frugal number, since it uses more digits than its factorization.

521295372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 18 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 521295372 is about 22831.8937453729. The cubic root of 521295372 is about 804.8123333479.

The spelling of 521295372 in words is "five hundred twenty-one million, two hundred ninety-five thousand, three hundred seventy-two".