52404012 has 36 divisors (see below), whose sum is σ = 136741696. Its totient is φ = 16904160.

The previous prime is 52403987. The next prime is 52404017. The reversal of 52404012 is 21040425.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×52404012² = 5492360947392288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (52404017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22363 + ... + 24594.

Almost surely, 2^52404012 is an apocalyptic number.

It is an amenable number.

52404012 is an abundant number, since it is smaller than the sum of its proper divisors (84337684).

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

52404012 is a wasteful number, since it uses less digits than its factorization.

52404012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46998 (or 46993 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 52404012 is about 7239.0615413878. The cubic root of 52404012 is about 374.2152763690.

Adding to 52404012 its reverse (21040425), we get a palindrome (73444437).

The spelling of 52404012 in words is "fifty-two million, four hundred four thousand, twelve".