51074040 has 64 divisors (see below), whose sum is σ = 153763200. Its totient is φ = 13571712.

The previous prime is 51074003. The next prime is 51074041. The reversal of 51074040 is 4047015.

It is a junction number, because it is equal to n+sod(n) for n = 51073998 and 51074016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51074041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44919 + ... + 46041.

It is an arithmetic number, because the mean of its divisors is an integer number (2402550).

Almost surely, 2^51074040 is an apocalyptic number.

It is an amenable number.

51074040 is an abundant number, since it is smaller than the sum of its proper divisors (102689160).

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

51074040 is a wasteful number, since it uses less digits than its factorization.

51074040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 51074040 is about 7146.6103853505. The cubic root of 51074040 is about 371.0223490677.

The spelling of 51074040 in words is "fifty-one million, seventy-four thousand, forty".