52757040 has 160 divisors (see below), whose sum is σ = 193130496. Its totient is φ = 11658240.

The previous prime is 52757021. The next prime is 52757057. The reversal of 52757040 is 4075725.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52756989 and 52757007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51574 + ... + 52586.

Almost surely, 2^52757040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52757040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96565248).

52757040 is an abundant number, since it is smaller than the sum of its proper divisors (140373456).

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

52757040 is a wasteful number, since it uses less digits than its factorization.

52757040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 52757040 is about 7263.4041605848. The cubic root of 52757040 is about 375.0537167494.

The spelling of 52757040 in words is "fifty-two million, seven hundred fifty-seven thousand, forty".