51015404 has 24 divisors (see below), whose sum is σ = 98405328. Its totient is φ = 22947840.

The previous prime is 51015401. The next prime is 51015409. The reversal of 51015404 is 40451015.

It is not an unprimeable number, because it can be changed into a prime (51015401) 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, 1709 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (4100222).

Almost surely, 2^51015404 is an apocalyptic number.

It is an amenable number.

51015404 is a deficient number, since it is larger than the sum of its proper divisors (47389924).

51015404 is a wasteful number, since it uses less digits than its factorization.

51015404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12065 (or 12063 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51015404 is about 7142.5068428389. The cubic root of 51015404 is about 370.8803095422.

Adding to 51015404 its reverse (40451015), we get a palindrome (91466419).

The spelling of 51015404 in words is "fifty-one million, fifteen thousand, four hundred four".