51628023 has 12 divisors (see below), whose sum is σ = 77336168. Its totient is φ = 34418520.

The previous prime is 51628019. The next prime is 51628067. The reversal of 51628023 is 32082615.

It is not a de Polignac number, because 51628023 - 2² = 51628019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51628223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105988 + ... + 106473.

Almost surely, 2^51628023 is an apocalyptic number.

51628023 is a deficient number, since it is larger than the sum of its proper divisors (25708145).

51628023 is an equidigital number, since it uses as much as digits as its factorization.

51628023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212476 (or 212464 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51628023 is about 7185.2642957653. The cubic root of 51628023 is about 372.3589796961.

The spelling of 51628023 in words is "fifty-one million, six hundred twenty-eight thousand, twenty-three".