51032455 has 4 divisors (see below), whose sum is σ = 61238952. Its totient is φ = 40825960.

The previous prime is 51032447. The next prime is 51032477. The reversal of 51032455 is 55423015.

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

It is not a de Polignac number, because 51032455 - 2³ = 51032447 is a prime.

It is a super-2 number, since 2×51032455² = 5208622926654050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5103241 + ... + 5103250.

It is an arithmetic number, because the mean of its divisors is an integer number (15309738).

Almost surely, 2^51032455 is an apocalyptic number.

51032455 is a deficient number, since it is larger than the sum of its proper divisors (10206497).

51032455 is a wasteful number, since it uses less digits than its factorization.

51032455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10206496.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 51032455 is about 7143.7003716561. The cubic root of 51032455 is about 370.9216250093.

The spelling of 51032455 in words is "fifty-one million, thirty-two thousand, four hundred fifty-five".