75903121 has 16 divisors (see below), whose sum is σ = 90892800. Its totient is φ = 62008128.

The previous prime is 75903109. The next prime is 75903173. The reversal of 75903121 is 12130957.

It is not a de Polignac number, because 75903121 - 2⁷ = 75902993 is a prime.

It is a super-2 number, since 2×75903121² = 11522567555081282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75903121.

It is not an unprimeable number, because it can be changed into a prime (75903101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13671 + ... + 18403.

It is an arithmetic number, because the mean of its divisors is an integer number (5680800).

Almost surely, 2^75903121 is an apocalyptic number.

It is an amenable number.

75903121 is a deficient number, since it is larger than the sum of its proper divisors (14989679).

75903121 is a wasteful number, since it uses less digits than its factorization.

75903121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 75903121 is about 8712.2397235154. The cubic root of 75903121 is about 423.4022984067.

The spelling of 75903121 in words is "seventy-five million, nine hundred three thousand, one hundred twenty-one".