51132377 has 4 divisors (see below), whose sum is σ = 51346560. Its totient is φ = 50918196.

The previous prime is 51132353. The next prime is 51132383. The reversal of 51132377 is 77323115.

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 51132377 - 2¹² = 51128281 is a prime.

It is a super-2 number, since 2×51132377² = 5229039955340258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51132317) 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, 106733 + ... + 107210.

It is an arithmetic number, because the mean of its divisors is an integer number (12836640).

Almost surely, 2^51132377 is an apocalyptic number.

It is an amenable number.

51132377 is a deficient number, since it is larger than the sum of its proper divisors (214183).

51132377 is a wasteful number, since it uses less digits than its factorization.

51132377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214182.

The product of its digits is 4410, while the sum is 29.

The square root of 51132377 is about 7150.6906659427. The cubic root of 51132377 is about 371.1635564550.

The spelling of 51132377 in words is "fifty-one million, one hundred thirty-two thousand, three hundred seventy-seven".