51777077 has 4 divisors (see below), whose sum is σ = 56484096. Its totient is φ = 47070060.

The previous prime is 51777013. The next prime is 51777101. The reversal of 51777077 is 77077715.

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.

It is a cyclic number.

It is not a de Polignac number, because 51777077 - 2⁶ = 51777013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51777277) 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, 2353493 + ... + 2353514.

It is an arithmetic number, because the mean of its divisors is an integer number (14121024).

Almost surely, 2^51777077 is an apocalyptic number.

It is an amenable number.

51777077 is a deficient number, since it is larger than the sum of its proper divisors (4707019).

51777077 is a wasteful number, since it uses less digits than its factorization.

51777077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4707018.

The product of its (nonzero) digits is 84035, while the sum is 41.

The square root of 51777077 is about 7195.6290204540. The cubic root of 51777077 is about 372.7169782223.

The spelling of 51777077 in words is "fifty-one million, seven hundred seventy-seven thousand, seventy-seven".