51607520 has 48 divisors (see below), whose sum is σ = 124912368. Its totient is φ = 20136960.

The previous prime is 51607519. The next prime is 51607547. The reversal of 51607520 is 2570615.

It is a super-2 number, since 2×51607520² = 5326672241100800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51607520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627 + ... + 10493.

It is an arithmetic number, because the mean of its divisors is an integer number (2602341).

Almost surely, 2^51607520 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 51607520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62456184).

51607520 is an abundant number, since it is smaller than the sum of its proper divisors (73304848).

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

51607520 is a wasteful number, since it uses less digits than its factorization.

51607520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923 (or 7915 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 51607520 is about 7183.8374146413. The cubic root of 51607520 is about 372.3096816175.

The spelling of 51607520 in words is "fifty-one million, six hundred seven thousand, five hundred twenty".