51455634 has 32 divisors (see below), whose sum is σ = 109273536. Its totient is φ = 16097280.

The previous prime is 51455627. The next prime is 51455639. The reversal of 51455634 is 43655415.

It is a junction number, because it is equal to n+sod(n) for n = 51455595 and 51455604.

It is not an unprimeable number, because it can be changed into a prime (51455639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64989 + ... + 65775.

It is an arithmetic number, because the mean of its divisors is an integer number (3414798).

Almost surely, 2^51455634 is an apocalyptic number.

51455634 is an abundant number, since it is smaller than the sum of its proper divisors (57817902).

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

51455634 is a wasteful number, since it uses less digits than its factorization.

51455634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450.

The product of its digits is 36000, while the sum is 33.

The square root of 51455634 is about 7173.2582554931. The cubic root of 51455634 is about 371.9440747238.

The spelling of 51455634 in words is "fifty-one million, four hundred fifty-five thousand, six hundred thirty-four".