74522520 has 96 divisors (see below), whose sum is σ = 244127520. Its totient is φ = 19714560.

The previous prime is 74522471. The next prime is 74522521. The reversal of 74522520 is 2522547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74522521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48565 + ... + 50075.

It is an arithmetic number, because the mean of its divisors is an integer number (2542995).

Almost surely, 2^74522520 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 74522520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122063760).

74522520 is an abundant number, since it is smaller than the sum of its proper divisors (169605000).

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

74522520 is a wasteful number, since it uses less digits than its factorization.

74522520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 74522520 is about 8632.6427008188. The cubic root of 74522520 is about 420.8194884399.

Adding to 74522520 its sum of digits (27), we get a palindrome (74522547).

The spelling of 74522520 in words is "seventy-four million, five hundred twenty-two thousand, five hundred twenty".