75373121 has 16 divisors (see below), whose sum is σ = 83358720. Its totient is φ = 67837440.

The previous prime is 75373099. The next prime is 75373187. The reversal of 75373121 is 12137357.

It is a cyclic number.

It is not a de Polignac number, because 75373121 - 2²² = 71178817 is a prime.

It is a super-2 number, since 2×75373121² = 11362214738561282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75373021) 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, 46100 + ... + 47706.

It is an arithmetic number, because the mean of its divisors is an integer number (5209920).

Almost surely, 2^75373121 is an apocalyptic number.

It is an amenable number.

75373121 is a deficient number, since it is larger than the sum of its proper divisors (7985599).

75373121 is a wasteful number, since it uses less digits than its factorization.

75373121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744.

The product of its digits is 4410, while the sum is 29.

The square root of 75373121 is about 8681.7694625001. The cubic root of 75373121 is about 422.4145148757.

The spelling of 75373121 in words is "seventy-five million, three hundred seventy-three thousand, one hundred twenty-one".