51161268 has 24 divisors (see below), whose sum is σ = 119711872. Its totient is φ = 17005824.

The previous prime is 51161261. The next prime is 51161287. The reversal of 51161268 is 86216115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51161261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405 + ... + 10212.

Almost surely, 2^51161268 is an apocalyptic number.

It is an amenable number.

51161268 is an abundant number, since it is smaller than the sum of its proper divisors (68550604).

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

51161268 is a wasteful number, since it uses less digits than its factorization.

51161268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11991 (or 11989 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 51161268 is about 7152.7105351748. The cubic root of 51161268 is about 371.2334486834.

The spelling of 51161268 in words is "fifty-one million, one hundred sixty-one thousand, two hundred sixty-eight".