51495020 has 12 divisors (see below), whose sum is σ = 108139584. Its totient is φ = 20598000.

The previous prime is 51495013. The next prime is 51495029. The reversal of 51495020 is 2059415.

It is not an unprimeable number, because it can be changed into a prime (51495029) 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, 1287356 + ... + 1287395.

It is an arithmetic number, because the mean of its divisors is an integer number (9011632).

Almost surely, 2^51495020 is an apocalyptic number.

It is an amenable number.

51495020 is an abundant number, since it is smaller than the sum of its proper divisors (56644564).

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

51495020 is a wasteful number, since it uses less digits than its factorization.

51495020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574760 (or 2574758 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51495020 is about 7176.0030657742. The cubic root of 51495020 is about 372.0389503286.

The spelling of 51495020 in words is "fifty-one million, four hundred ninety-five thousand, twenty".