51112623 has 4 divisors (see below), whose sum is σ = 68150168. Its totient is φ = 34075080.

The previous prime is 51112573. The next prime is 51112637. The reversal of 51112623 is 32621115.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51112623 - 2⁸ = 51112367 is a prime.

It is a super-2 number, since 2×51112623² = 5225000459880258, which contains 22 as substring.

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 51112623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51112643) 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, 8518768 + ... + 8518773.

It is an arithmetic number, because the mean of its divisors is an integer number (17037542).

Almost surely, 2^51112623 is an apocalyptic number.

51112623 is a deficient number, since it is larger than the sum of its proper divisors (17037545).

51112623 is a wasteful number, since it uses less digits than its factorization.

51112623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17037544.

The product of its digits is 360, while the sum is 21.

The square root of 51112623 is about 7149.3092673349. The cubic root of 51112623 is about 371.1157530233.

Adding to 51112623 its reverse (32621115), we get a palindrome (83733738).

The spelling of 51112623 in words is "fifty-one million, one hundred twelve thousand, six hundred twenty-three".