51777113 has 4 divisors (see below), whose sum is σ = 52094928. Its totient is φ = 51459300.

The previous prime is 51777107. The next prime is 51777119. The reversal of 51777113 is 31177715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31177715 = 5 ⋅6235543.

It is an interprime number because it is at equal distance from previous prime (51777107) and next prime (51777119).

It is a cyclic number.

It is not a de Polignac number, because 51777113 - 2¹⁶ = 51711577 is a prime.

It is a super-2 number, since 2×51777113² = 5361738861229538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51777113.

It is not an unprimeable number, because it can be changed into a prime (51777119) 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, 158663 + ... + 158988.

It is an arithmetic number, because the mean of its divisors is an integer number (13023732).

Almost surely, 2^51777113 is an apocalyptic number.

It is an amenable number.

51777113 is a deficient number, since it is larger than the sum of its proper divisors (317815).

51777113 is a wasteful number, since it uses less digits than its factorization.

51777113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317814.

The product of its digits is 5145, while the sum is 32.

The square root of 51777113 is about 7195.6315219722. The cubic root of 51777113 is about 372.7170646042.

The spelling of 51777113 in words is "fifty-one million, seven hundred seventy-seven thousand, one hundred thirteen".