75542520 has 64 divisors (see below), whose sum is σ = 227700000. Its totient is φ = 20049408.

The previous prime is 75542507. The next prime is 75542531. The reversal of 75542520 is 2524557.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26106 + ... + 28854.

Almost surely, 2^75542520 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 75542520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113850000).

75542520 is an abundant number, since it is smaller than the sum of its proper divisors (152157480).

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

75542520 is a wasteful number, since it uses less digits than its factorization.

75542520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 75542520 is about 8691.5200051544. The cubic root of 75542520 is about 422.7307330675.

The spelling of 75542520 in words is "seventy-five million, five hundred forty-two thousand, five hundred twenty".