51500454 has 16 divisors (see below), whose sum is σ = 103329648. Its totient is φ = 17112032.

The previous prime is 51500453. The next prime is 51500461. The reversal of 51500454 is 45400515.

51500454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51500454² = 5304593524412232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11637 + ... + 15440.

It is an arithmetic number, because the mean of its divisors is an integer number (6458103).

Almost surely, 2^51500454 is an apocalyptic number.

51500454 is an abundant number, since it is smaller than the sum of its proper divisors (51829194).

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

51500454 is a wasteful number, since it uses less digits than its factorization.

51500454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27399.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51500454 is about 7176.3816788128. The cubic root of 51500454 is about 372.0520363095.

Adding to 51500454 its reverse (45400515), we get a palindrome (96900969).

The spelling of 51500454 in words is "fifty-one million, five hundred thousand, four hundred fifty-four".