51509876 has 12 divisors (see below), whose sum is σ = 98337120. Its totient is φ = 23413560.

The previous prime is 51509873. The next prime is 51509897. The reversal of 51509876 is 67890515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51509873) 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, 585296 + ... + 585383.

It is an arithmetic number, because the mean of its divisors is an integer number (8194760).

Almost surely, 2^51509876 is an apocalyptic number.

It is an amenable number.

51509876 is a deficient number, since it is larger than the sum of its proper divisors (46827244).

51509876 is a wasteful number, since it uses less digits than its factorization.

51509876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170694 (or 1170692 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51509876 is about 7177.0381077433. The cubic root of 51509876 is about 372.0747238800.

The spelling of 51509876 in words is "fifty-one million, five hundred nine thousand, eight hundred seventy-six".