51411977 has 4 divisors (see below), whose sum is σ = 51441300. Its totient is φ = 51382656.

The previous prime is 51411973. The next prime is 51411989. The reversal of 51411977 is 77911415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16613776 + 34798201 = 4076^2 + 5899^2 .

It is a cyclic number.

It is not a de Polignac number, because 51411977 - 2² = 51411973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51411973) 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, 11852 + ... + 15597.

It is an arithmetic number, because the mean of its divisors is an integer number (12860325).

Almost surely, 2^51411977 is an apocalyptic number.

It is an amenable number.

51411977 is a deficient number, since it is larger than the sum of its proper divisors (29323).

51411977 is a wasteful number, since it uses less digits than its factorization.

51411977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29322.

The product of its digits is 8820, while the sum is 35.

The square root of 51411977 is about 7170.2145714058. The cubic root of 51411977 is about 371.8388542605.

The spelling of 51411977 in words is "fifty-one million, four hundred eleven thousand, nine hundred seventy-seven".