51396628 has 24 divisors (see below), whose sum is σ = 94409280. Its totient is φ = 24435840.

The previous prime is 51396617. The next prime is 51396629. The reversal of 51396628 is 82669315.

It is a super-2 number, since 2×51396628² = 5283226739540768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51396629) 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, 14908 + ... + 18028.

It is an arithmetic number, because the mean of its divisors is an integer number (3933720).

Almost surely, 2^51396628 is an apocalyptic number.

It is an amenable number.

51396628 is a deficient number, since it is larger than the sum of its proper divisors (43012652).

51396628 is a wasteful number, since it uses less digits than its factorization.

51396628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3325 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 51396628 is about 7169.1441609163. The cubic root of 51396628 is about 371.8018465243.

The spelling of 51396628 in words is "fifty-one million, three hundred ninety-six thousand, six hundred twenty-eight".