51572253 has 4 divisors (see below), whose sum is σ = 68763008. Its totient is φ = 34381500.

The previous prime is 51572249. The next prime is 51572273. The reversal of 51572253 is 35227515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51572253 - 2² = 51572249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51572253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51572273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8595373 + ... + 8595378.

It is an arithmetic number, because the mean of its divisors is an integer number (17190752).

Almost surely, 2^51572253 is an apocalyptic number.

It is an amenable number.

51572253 is a deficient number, since it is larger than the sum of its proper divisors (17190755).

51572253 is a wasteful number, since it uses less digits than its factorization.

51572253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17190754.

The product of its digits is 10500, while the sum is 30.

The square root of 51572253 is about 7181.3823878136. The cubic root of 51572253 is about 372.2248539438.

Adding to 51572253 its reverse (35227515), we get a palindrome (86799768).

The spelling of 51572253 in words is "fifty-one million, five hundred seventy-two thousand, two hundred fifty-three".