51899237 has 16 divisors (see below), whose sum is σ = 57583680. Its totient is φ = 46472832.

The previous prime is 51899219. The next prime is 51899251. The reversal of 51899237 is 73299815.

It is a cyclic number.

It is not a de Polignac number, because 51899237 - 2⁸ = 51898981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51899297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126689 + ... + 127097.

It is an arithmetic number, because the mean of its divisors is an integer number (3598980).

Almost surely, 2^51899237 is an apocalyptic number.

It is an amenable number.

51899237 is a deficient number, since it is larger than the sum of its proper divisors (5684443).

51899237 is a wasteful number, since it uses less digits than its factorization.

51899237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its digits is 136080, while the sum is 44.

The square root of 51899237 is about 7204.1125060621. The cubic root of 51899237 is about 373.0098706739.

The spelling of 51899237 in words is "fifty-one million, eight hundred ninety-nine thousand, two hundred thirty-seven".