52531740 has 96 divisors (see below), whose sum is σ = 165587520. Its totient is φ = 13996800.

The previous prime is 52531733. The next prime is 52531741. The reversal of 52531740 is 4713525.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52531741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43140 + ... + 44340.

It is an arithmetic number, because the mean of its divisors is an integer number (1724870).

Almost surely, 2^52531740 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 52531740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82793760).

52531740 is an abundant number, since it is smaller than the sum of its proper divisors (113055780).

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

52531740 is a wasteful number, since it uses less digits than its factorization.

52531740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 52531740 is about 7247.8783102367. The cubic root of 52531740 is about 374.5190634638.

The spelling of 52531740 in words is "fifty-two million, five hundred thirty-one thousand, seven hundred forty".