51244455 has 8 divisors (see below), whose sum is σ = 81991152. Its totient is φ = 27330368.

The previous prime is 51244447. The next prime is 51244493. The reversal of 51244455 is 55444215.

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 51244455 - 2³ = 51244447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708134 + ... + 1708163.

It is an arithmetic number, because the mean of its divisors is an integer number (10248894).

Almost surely, 2^51244455 is an apocalyptic number.

51244455 is a deficient number, since it is larger than the sum of its proper divisors (30746697).

51244455 is a wasteful number, since it uses less digits than its factorization.

51244455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416305.

The product of its digits is 16000, while the sum is 30.

The square root of 51244455 is about 7158.5232415632. The cubic root of 51244455 is about 371.4345453040.

The spelling of 51244455 in words is "fifty-one million, two hundred forty-four thousand, four hundred fifty-five".