51100077 has 16 divisors (see below), whose sum is σ = 79188480. Its totient is φ = 28704432.

The previous prime is 51100057. The next prime is 51100157. The reversal of 51100077 is 77000115.

It is not a de Polignac number, because 51100077 - 2⁸ = 51099821 is a prime.

It is a super-2 number, since 2×51100077² = 5222435738811858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19383 + ... + 21860.

It is an arithmetic number, because the mean of its divisors is an integer number (4949280).

Almost surely, 2^51100077 is an apocalyptic number.

It is an amenable number.

51100077 is a deficient number, since it is larger than the sum of its proper divisors (28088403).

51100077 is a wasteful number, since it uses less digits than its factorization.

51100077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41312.

The product of its (nonzero) digits is 245, while the sum is 21.

The square root of 51100077 is about 7148.4317860633. The cubic root of 51100077 is about 371.0853861004.

It can be divided in two parts, 51 and 100077, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 51100077 in words is "fifty-one million, one hundred thousand, seventy-seven".