51773087 has 4 divisors (see below), whose sum is σ = 51857616. Its totient is φ = 51688560.

The previous prime is 51773083. The next prime is 51773089. The reversal of 51773087 is 78037715.

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

It is a cyclic number.

It is not a de Polignac number, because 51773087 - 2² = 51773083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51773087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51773083) 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, 41339 + ... + 42572.

It is an arithmetic number, because the mean of its divisors is an integer number (12964404).

Almost surely, 2^51773087 is an apocalyptic number.

51773087 is a deficient number, since it is larger than the sum of its proper divisors (84529).

51773087 is an equidigital number, since it uses as much as digits as its factorization.

51773087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84528.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 51773087 is about 7195.3517634651. The cubic root of 51773087 is about 372.7074039794.

The spelling of 51773087 in words is "fifty-one million, seven hundred seventy-three thousand, eighty-seven".