75012550 has 24 divisors (see below), whose sum is σ = 140633856. Its totient is φ = 29766240.

The previous prime is 75012547. The next prime is 75012557. The reversal of 75012550 is 5521057.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75012557) 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 11 ways as a sum of consecutive naturals, for example, 444 + ... + 12256.

It is an arithmetic number, because the mean of its divisors is an integer number (5859744).

Almost surely, 2^75012550 is an apocalyptic number.

75012550 is a deficient number, since it is larger than the sum of its proper divisors (65621306).

75012550 is a wasteful number, since it uses less digits than its factorization.

75012550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11952 (or 11947 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 75012550 is about 8660.9785821234. The cubic root of 75012550 is about 421.7398537389.

The spelling of 75012550 in words is "seventy-five million, twelve thousand, five hundred fifty".