52191312 has 40 divisors (see below), whose sum is σ = 138476256. Its totient is φ = 16926336.

The previous prime is 52191287. The next prime is 52191331. The reversal of 52191312 is 21319125.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12918 + ... + 16469.

Almost surely, 2^52191312 is an apocalyptic number.

It is an amenable number.

52191312 is an abundant number, since it is smaller than the sum of its proper divisors (86284944).

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

52191312 is a wasteful number, since it uses less digits than its factorization.

52191312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29435 (or 29429 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 52191312 is about 7224.3554729817. The cubic root of 52191312 is about 373.7082953283.

The spelling of 52191312 in words is "fifty-two million, one hundred ninety-one thousand, three hundred twelve".