51423285 has 16 divisors (see below), whose sum is σ = 85855104. Its totient is φ = 26233152.

The previous prime is 51423277. The next prime is 51423301. The reversal of 51423285 is 58232415.

It is not a de Polignac number, because 51423285 - 2³ = 51423277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74182 + ... + 74871.

It is an arithmetic number, because the mean of its divisors is an integer number (5365944).

Almost surely, 2^51423285 is an apocalyptic number.

It is an amenable number.

51423285 is a deficient number, since it is larger than the sum of its proper divisors (34431819).

51423285 is a wasteful number, since it uses less digits than its factorization.

51423285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149084.

The product of its digits is 9600, while the sum is 30.

The square root of 51423285 is about 7171.0030679118. The cubic root of 51423285 is about 371.8661140922.

The spelling of 51423285 in words is "fifty-one million, four hundred twenty-three thousand, two hundred eighty-five".