51357204 has 72 divisors (see below), whose sum is σ = 141942528. Its totient is φ = 15586560.

The previous prime is 51357197. The next prime is 51357223. The reversal of 51357204 is 40275315.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17619 + ... + 20325.

It is an arithmetic number, because the mean of its divisors is an integer number (1971424).

Almost surely, 2^51357204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51357204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70971264).

51357204 is an abundant number, since it is smaller than the sum of its proper divisors (90585324).

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

51357204 is a wasteful number, since it uses less digits than its factorization.

51357204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 51357204 is about 7166.3940723351. The cubic root of 51357204 is about 371.7067581500.

The spelling of 51357204 in words is "fifty-one million, three hundred fifty-seven thousand, two hundred four".