52758140 has 24 divisors (see below), whose sum is σ = 117310032. Its totient is φ = 19861760.

The previous prime is 52758131. The next prime is 52758143. The reversal of 52758140 is 4185725.

It is a junction number, because it is equal to n+sod(n) for n = 52758097 and 52758106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52758143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77246 + ... + 77925.

It is an arithmetic number, because the mean of its divisors is an integer number (4887918).

Almost surely, 2^52758140 is an apocalyptic number.

It is an amenable number.

52758140 is an abundant number, since it is smaller than the sum of its proper divisors (64551892).

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

52758140 is a wasteful number, since it uses less digits than its factorization.

52758140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155197 (or 155195 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 52758140 is about 7263.4798822603. The cubic root of 52758140 is about 375.0563233919.

The spelling of 52758140 in words is "fifty-two million, seven hundred fifty-eight thousand, one hundred forty".