52157070 has 72 divisors (see below), whose sum is σ = 157761864. Its totient is φ = 11920608.

The previous prime is 52157057. The next prime is 52157081. The reversal of 52157070 is 7075125.

52157070 is a `hidden beast` number, since 5 + 21 + 570 + 70 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1504 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (2191137).

Almost surely, 2^52157070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52157070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78880932).

52157070 is an abundant number, since it is smaller than the sum of its proper divisors (105604794).

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

52157070 is a wasteful number, since it uses less digits than its factorization.

52157070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11854 (or 11844 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 52157070 is about 7221.9851841443. The cubic root of 52157070 is about 373.6265491620.

The spelling of 52157070 in words is "fifty-two million, one hundred fifty-seven thousand, seventy".