78525504 has 112 divisors (see below), whose sum is σ = 238963200. Its totient is φ = 25256448.

The previous prime is 78525493. The next prime is 78525521. The reversal of 78525504 is 40552587.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49329 + ... + 50895.

It is an arithmetic number, because the mean of its divisors is an integer number (2133600).

Almost surely, 2^78525504 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 78525504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119481600).

78525504 is an abundant number, since it is smaller than the sum of its proper divisors (160437696).

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

78525504 is a wasteful number, since it uses less digits than its factorization.

78525504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 78525504 is about 8861.4617304370. The cubic root of 78525504 is about 428.2232509263.

The spelling of 78525504 in words is "seventy-eight million, five hundred twenty-five thousand, five hundred four".