52421740 has 24 divisors (see below), whose sum is σ = 125812512. Its totient is φ = 17973120.

The previous prime is 52421729. The next prime is 52421749. The reversal of 52421740 is 4712425.

It is not an unprimeable number, because it can be changed into a prime (52421749) 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, 187081 + ... + 187360.

It is an arithmetic number, because the mean of its divisors is an integer number (5242188).

Almost surely, 2^52421740 is an apocalyptic number.

It is an amenable number.

52421740 is an abundant number, since it is smaller than the sum of its proper divisors (73390772).

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

52421740 is a wasteful number, since it uses less digits than its factorization.

52421740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374457 (or 374455 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 52421740 is about 7240.2859059570. The cubic root of 52421740 is about 374.2574699607.

The spelling of 52421740 in words is "fifty-two million, four hundred twenty-one thousand, seven hundred forty".