52402540 has 24 divisors (see below), whose sum is σ = 110285280. Its totient is φ = 20915328.

The previous prime is 52402529. The next prime is 52402541. The reversal of 52402540 is 4520425.

It is not an unprimeable number, because it can be changed into a prime (52402541) 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, 7456 + ... + 12664.

It is an arithmetic number, because the mean of its divisors is an integer number (4595220).

Almost surely, 2^52402540 is an apocalyptic number.

It is an amenable number.

52402540 is an abundant number, since it is smaller than the sum of its proper divisors (57882740).

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

52402540 is a wasteful number, since it uses less digits than its factorization.

52402540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 52402540 is about 7238.9598700366. The cubic root of 52402540 is about 374.2117725021.

Adding to 52402540 its reverse (4520425), we get a palindrome (56922965).

The spelling of 52402540 in words is "fifty-two million, four hundred two thousand, five hundred forty".