51244355 has 4 divisors (see below), whose sum is σ = 61493232. Its totient is φ = 40995480.

The previous prime is 51244351. The next prime is 51244379. The reversal of 51244355 is 55344215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55344215 = 5 ⋅11068843.

It is not a de Polignac number, because 51244355 - 2² = 51244351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51244351) 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, 5124431 + ... + 5124440.

It is an arithmetic number, because the mean of its divisors is an integer number (15373308).

Almost surely, 2^51244355 is an apocalyptic number.

51244355 is a deficient number, since it is larger than the sum of its proper divisors (10248877).

51244355 is a wasteful number, since it uses less digits than its factorization.

51244355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10248876.

The product of its digits is 12000, while the sum is 29.

The square root of 51244355 is about 7158.5162568789. The cubic root of 51244355 is about 371.4343036943.

The spelling of 51244355 in words is "fifty-one million, two hundred forty-four thousand, three hundred fifty-five".