74957431 has 4 divisors (see below), whose sum is σ = 77542200. Its totient is φ = 72372664.

The previous prime is 74957419. The next prime is 74957461. The reversal of 74957431 is 13475947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13475947 = 983 ⋅13709.

It is a cyclic number.

It is not a de Polignac number, because 74957431 - 2⁷ = 74957303 is a prime.

It is a super-2 number, since 2×74957431² = 11237232924239522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74957461) 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, 1292341 + ... + 1292398.

It is an arithmetic number, because the mean of its divisors is an integer number (19385550).

Almost surely, 2^74957431 is an apocalyptic number.

74957431 is a deficient number, since it is larger than the sum of its proper divisors (2584769).

74957431 is a wasteful number, since it uses less digits than its factorization.

74957431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584768.

The product of its digits is 105840, while the sum is 40.

The square root of 74957431 is about 8657.7959666419. The cubic root of 74957431 is about 421.6365306950.

The spelling of 74957431 in words is "seventy-four million, nine hundred fifty-seven thousand, four hundred thirty-one".