51625719 has 24 divisors (see below), whose sum is σ = 79252992. Its totient is φ = 32271360.

The previous prime is 51625697. The next prime is 51625723. The reversal of 51625719 is 91752615.

It is not a de Polignac number, because 51625719 - 2⁵ = 51625687 is a prime.

It is a super-2 number, since 2×51625719² = 5330429724533922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51625729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58159 + ... + 59039.

It is an arithmetic number, because the mean of its divisors is an integer number (3302208).

Almost surely, 2^51625719 is an apocalyptic number.

51625719 is a deficient number, since it is larger than the sum of its proper divisors (27627273).

51625719 is a wasteful number, since it uses less digits than its factorization.

51625719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287 (or 1284 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 51625719 is about 7185.1039658449. The cubic root of 51625719 is about 372.3534405348.

The spelling of 51625719 in words is "fifty-one million, six hundred twenty-five thousand, seven hundred nineteen".