51649304 has 16 divisors (see below), whose sum is σ = 110677200. Its totient is φ = 22135392.

The previous prime is 51649291. The next prime is 51649313. The reversal of 51649304 is 40394615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461099 + ... + 461210.

It is an arithmetic number, because the mean of its divisors is an integer number (6917325).

Almost surely, 2^51649304 is an apocalyptic number.

It is an amenable number.

51649304 is an abundant number, since it is smaller than the sum of its proper divisors (59027896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51649304 is a wasteful number, since it uses less digits than its factorization.

51649304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922322 (or 922318 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 51649304 is about 7186.7450212179. The cubic root of 51649304 is about 372.4101346210.

The spelling of 51649304 in words is "fifty-one million, six hundred forty-nine thousand, three hundred four".