51924251 has 4 divisors (see below), whose sum is σ = 52581600. Its totient is φ = 51266904.

The previous prime is 51924247. The next prime is 51924269. The reversal of 51924251 is 15242915.

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

It is a cyclic number.

It is not a de Polignac number, because 51924251 - 2² = 51924247 is a prime.

It is a super-2 number, since 2×51924251² = 5392255683822002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51924241) 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, 328556 + ... + 328713.

It is an arithmetic number, because the mean of its divisors is an integer number (13145400).

Almost surely, 2^51924251 is an apocalyptic number.

51924251 is a deficient number, since it is larger than the sum of its proper divisors (657349).

51924251 is an equidigital number, since it uses as much as digits as its factorization.

51924251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657348.

The product of its digits is 3600, while the sum is 29.

The square root of 51924251 is about 7205.8483886354. The cubic root of 51924251 is about 373.0697878701.

The spelling of 51924251 in words is "fifty-one million, nine hundred twenty-four thousand, two hundred fifty-one".