51261376 has 14 divisors (see below), whose sum is σ = 101721920. Its totient is φ = 25630656.

The previous prime is 51261359. The next prime is 51261377. The reversal of 51261376 is 67316215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51261377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400416 + ... + 400543.

Almost surely, 2^51261376 is an apocalyptic number.

It is an amenable number.

51261376 is a deficient number, since it is larger than the sum of its proper divisors (50460544).

51261376 is an equidigital number, since it uses as much as digits as its factorization.

51261376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800971 (or 800961 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 51261376 is about 7159.7050218567. The cubic root of 51261376 is about 371.4754235629.

The spelling of 51261376 in words is "fifty-one million, two hundred sixty-one thousand, three hundred seventy-six".