51977453 has 4 divisors (see below), whose sum is σ = 56702688. Its totient is φ = 47252220.

The previous prime is 51977437. The next prime is 51977459. The reversal of 51977453 is 35477915.

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 51977453 - 2⁴ = 51977437 is a prime.

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 51977453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51977459) 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, 2362601 + ... + 2362622.

It is an arithmetic number, because the mean of its divisors is an integer number (14175672).

Almost surely, 2^51977453 is an apocalyptic number.

It is an amenable number.

51977453 is a deficient number, since it is larger than the sum of its proper divisors (4725235).

51977453 is a wasteful number, since it uses less digits than its factorization.

51977453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725234.

The product of its digits is 132300, while the sum is 41.

The square root of 51977453 is about 7209.5390282597. The cubic root of 51977453 is about 373.1971611334.

The spelling of 51977453 in words is "fifty-one million, nine hundred seventy-seven thousand, four hundred fifty-three".