51560004 has 12 divisors (see below), whose sum is σ = 120306704. Its totient is φ = 17186664.

The previous prime is 51559961. The next prime is 51560009. The reversal of 51560004 is 40006515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (51560009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2148322 + ... + 2148345.

Almost surely, 2^51560004 is an apocalyptic number.

It is an amenable number.

51560004 is an abundant number, since it is smaller than the sum of its proper divisors (68746700).

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

51560004 is a wasteful number, since it uses less digits than its factorization.

51560004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296674 (or 4296672 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51560004 is about 7180.5295069375. The cubic root of 51560004 is about 372.1953823902.

Adding to 51560004 its reverse (40006515), we get a palindrome (91566519).

The spelling of 51560004 in words is "fifty-one million, five hundred sixty thousand, four".