75565020 has 48 divisors (see below), whose sum is σ = 212204160. Its totient is φ = 20091456.

The previous prime is 75565003. The next prime is 75565093. The reversal of 75565020 is 2056557.

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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21079 + ... + 24401.

It is an arithmetic number, because the mean of its divisors is an integer number (4420920).

Almost surely, 2^75565020 is an apocalyptic number.

It is an amenable number.

75565020 is an abundant number, since it is smaller than the sum of its proper divisors (136639140).

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

75565020 is a wasteful number, since it uses less digits than its factorization.

75565020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3712 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 75565020 is about 8692.8142738701. The cubic root of 75565020 is about 422.7726983842.

The spelling of 75565020 in words is "seventy-five million, five hundred sixty-five thousand, twenty".