51626500 has 48 divisors (see below), whose sum is σ = 114266880. Its totient is φ = 20373600.

The previous prime is 51626489. The next prime is 51626521. The reversal of 51626500 is 562615.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38847 + ... + 40153.

It is an arithmetic number, because the mean of its divisors is an integer number (2380560).

Almost surely, 2^51626500 is an apocalyptic number.

51626500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51626500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57133440).

51626500 is an abundant number, since it is smaller than the sum of its proper divisors (62640380).

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

51626500 is a wasteful number, since it uses less digits than its factorization.

51626500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51626500 is about 7185.1583141918. The cubic root of 51626500 is about 372.3553181943.

The spelling of 51626500 in words is "fifty-one million, six hundred twenty-six thousand, five hundred".