51455432 has 32 divisors (see below), whose sum is σ = 110510400. Its totient is φ = 22002624.

The previous prime is 51455431. The next prime is 51455441. The reversal of 51455432 is 23455415.

It is a super-2 number, since 2×51455432² = 5295322964613248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51455395 and 51455404.

It is not an unprimeable number, because it can be changed into a prime (51455431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35294 + ... + 36722.

It is an arithmetic number, because the mean of its divisors is an integer number (3453450).

Almost surely, 2^51455432 is an apocalyptic number.

It is an amenable number.

51455432 is an abundant number, since it is smaller than the sum of its proper divisors (59054968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51455432 is a wasteful number, since it uses less digits than its factorization.

51455432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085 (or 2081 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 51455432 is about 7173.2441754063. The cubic root of 51455432 is about 371.9435880081.

The spelling of 51455432 in words is "fifty-one million, four hundred fifty-five thousand, four hundred thirty-two".