51604550 has 24 divisors (see below), whose sum is σ = 96276576. Its totient is φ = 20579040.

The previous prime is 51604549. The next prime is 51604561. The reversal of 51604550 is 5540615.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17267 + ... + 20033.

It is an arithmetic number, because the mean of its divisors is an integer number (4011524).

Almost surely, 2^51604550 is an apocalyptic number.

51604550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51604550 is a deficient number, since it is larger than the sum of its proper divisors (44672026).

51604550 is a wasteful number, since it uses less digits than its factorization.

51604550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 3147 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51604550 is about 7183.6306976347. The cubic root of 51604550 is about 372.3025393705.

The spelling of 51604550 in words is "fifty-one million, six hundred four thousand, five hundred fifty".