51903601 has 8 divisors (see below), whose sum is σ = 55296864. Its totient is φ = 48548160.

The previous prime is 51903587. The next prime is 51903647. The reversal of 51903601 is 10630915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51903601 - 2¹⁷ = 51772529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51903001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6595 + ... + 12136.

It is an arithmetic number, because the mean of its divisors is an integer number (6912108).

Almost surely, 2^51903601 is an apocalyptic number.

It is an amenable number.

51903601 is a deficient number, since it is larger than the sum of its proper divisors (3393263).

51903601 is a wasteful number, since it uses less digits than its factorization.

51903601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18911.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 51903601 is about 7204.4153822500. The cubic root of 51903601 is about 373.0203253520.

The spelling of 51903601 in words is "fifty-one million, nine hundred three thousand, six hundred one".