51572623 has 8 divisors (see below), whose sum is σ = 53419520. Its totient is φ = 49737240.

The previous prime is 51572603. The next prime is 51572627. The reversal of 51572623 is 32627515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51572623 - 2²¹ = 49475471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51572627) 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, 6808 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (6677440).

Almost surely, 2^51572623 is an apocalyptic number.

51572623 is a deficient number, since it is larger than the sum of its proper divisors (1846897).

51572623 is a wasteful number, since it uses less digits than its factorization.

51572623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757.

The product of its digits is 12600, while the sum is 31.

The square root of 51572623 is about 7181.4081488243. The cubic root of 51572623 is about 372.2257441050.

The spelling of 51572623 in words is "fifty-one million, five hundred seventy-two thousand, six hundred twenty-three".