75421252 has 12 divisors (see below), whose sum is σ = 132717676. Its totient is φ = 37501920.

The previous prime is 75421249. The next prime is 75421259. The reversal of 75421252 is 25212457.

It can be written as a sum of positive squares in 2 ways, for example, as 7918596 + 67502656 = 2814^2 + 8216^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 75421252.

It is not an unprimeable number, because it can be changed into a prime (75421259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51363 + ... + 52810.

Almost surely, 2^75421252 is an apocalyptic number.

It is an amenable number.

75421252 is a deficient number, since it is larger than the sum of its proper divisors (57296424).

75421252 is a wasteful number, since it uses less digits than its factorization.

75421252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104358 (or 104356 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 75421252 is about 8684.5409780828. The cubic root of 75421252 is about 422.5044094635.

The spelling of 75421252 in words is "seventy-five million, four hundred twenty-one thousand, two hundred fifty-two".