51626172 has 48 divisors (see below), whose sum is σ = 130457600. Its totient is φ = 15795648.

The previous prime is 51626167. The next prime is 51626189. The reversal of 51626172 is 27162615.

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, 30213 + ... + 31875.

Almost surely, 2^51626172 is an apocalyptic number.

51626172 is a gapful number since it is divisible by the number (52) 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 51626172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65228800).

51626172 is an abundant number, since it is smaller than the sum of its proper divisors (78831428).

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

51626172 is a wasteful number, since it uses less digits than its factorization.

51626172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1880 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 51626172 is about 7185.1354893280. The cubic root of 51626172 is about 372.3545296277.

Adding to 51626172 its reverse (27162615), we get a palindrome (78788787).

The spelling of 51626172 in words is "fifty-one million, six hundred twenty-six thousand, one hundred seventy-two".