51432277 has 12 divisors (see below), whose sum is σ = 55948224. Its totient is φ = 47258640.

The previous prime is 51432263. The next prime is 51432281. The reversal of 51432277 is 77223415.

It is not a de Polignac number, because 51432277 - 2²³ = 43043669 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 (51432217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45238 + ... + 46360.

It is an arithmetic number, because the mean of its divisors is an integer number (4662352).

Almost surely, 2^51432277 is an apocalyptic number.

It is an amenable number.

51432277 is a deficient number, since it is larger than the sum of its proper divisors (4515947).

51432277 is a wasteful number, since it uses less digits than its factorization.

51432277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1407 counting only the distinct ones).

The product of its digits is 11760, while the sum is 31.

The square root of 51432277 is about 7171.6300099768. The cubic root of 51432277 is about 371.8877879650.

The spelling of 51432277 in words is "fifty-one million, four hundred thirty-two thousand, two hundred seventy-seven".