51269855 has 32 divisors (see below), whose sum is σ = 76180608. Its totient is φ = 32256000.

The previous prime is 51269851. The next prime is 51269861. The reversal of 51269855 is 55896215.

It is not a de Polignac number, because 51269855 - 2² = 51269851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51269851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127655 + ... + 128055.

It is an arithmetic number, because the mean of its divisors is an integer number (2380644).

Almost surely, 2^51269855 is an apocalyptic number.

51269855 is a deficient number, since it is larger than the sum of its proper divisors (24910753).

51269855 is a wasteful number, since it uses less digits than its factorization.

51269855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707.

The product of its digits is 108000, while the sum is 41.

The square root of 51269855 is about 7160.2971307062. The cubic root of 51269855 is about 371.4959040020.

The spelling of 51269855 in words is "fifty-one million, two hundred sixty-nine thousand, eight hundred fifty-five".