52511706 has 128 divisors (see below), whose sum is σ = 137625600. Its totient is φ = 14696640.

The previous prime is 52511699. The next prime is 52511741. The reversal of 52511706 is 60711525.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 52511706.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 413415 + ... + 413541.

It is an arithmetic number, because the mean of its divisors is an integer number (1075200).

Almost surely, 2^52511706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52511706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68812800).

52511706 is an abundant number, since it is smaller than the sum of its proper divisors (85113894).

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

52511706 is a wasteful number, since it uses less digits than its factorization.

52511706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 52511706 is about 7246.4961188149. The cubic root of 52511706 is about 374.4714473690.

The spelling of 52511706 in words is "fifty-two million, five hundred eleven thousand, seven hundred six".