51904265 has 16 divisors (see below), whose sum is σ = 71749632. Its totient is φ = 35308224.

The previous prime is 51904249. The next prime is 51904267. The reversal of 51904265 is 56240915.

It is a happy number.

It is not a de Polignac number, because 51904265 - 2⁴ = 51904249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51904267) 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, 1394 + ... + 10283.

It is an arithmetic number, because the mean of its divisors is an integer number (4484352).

Almost surely, 2^51904265 is an apocalyptic number.

It is an amenable number.

51904265 is a deficient number, since it is larger than the sum of its proper divisors (19845367).

51904265 is a wasteful number, since it uses less digits than its factorization.

51904265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 51904265 is about 7204.4614649535. The cubic root of 51904265 is about 373.0219160216.

The spelling of 51904265 in words is "fifty-one million, nine hundred four thousand, two hundred sixty-five".