51505626 has 16 divisors (see below), whose sum is σ = 103924224. Its totient is φ = 17016384.

The previous prime is 51505621. The next prime is 51505669. The reversal of 51505626 is 62650515.

It is a junction number, because it is equal to n+sod(n) for n = 51505593 and 51505602.

It is not an unprimeable number, because it can be changed into a prime (51505621) 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, 37306 + ... + 38661.

It is an arithmetic number, because the mean of its divisors is an integer number (6495264).

Almost surely, 2^51505626 is an apocalyptic number.

51505626 is an abundant number, since it is smaller than the sum of its proper divisors (52418598).

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

51505626 is a wasteful number, since it uses less digits than its factorization.

51505626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76085.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 51505626 is about 7176.7420184928. The cubic root of 51505626 is about 372.0644904957.

The spelling of 51505626 in words is "fifty-one million, five hundred five thousand, six hundred twenty-six".