74501231 has 4 divisors (see below), whose sum is σ = 85144272. Its totient is φ = 63858192.

The previous prime is 74501221. The next prime is 74501233. The reversal of 74501231 is 13210547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74501231 - 2¹⁰ = 74500207 is a prime.

It is a super-2 number, since 2×74501231² = 11100866841030722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74501197 and 74501206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74501233) 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, 5321510 + ... + 5321523.

It is an arithmetic number, because the mean of its divisors is an integer number (21286068).

Almost surely, 2^74501231 is an apocalyptic number.

74501231 is a deficient number, since it is larger than the sum of its proper divisors (10643041).

74501231 is a wasteful number, since it uses less digits than its factorization.

74501231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10643040.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 74501231 is about 8631.4095604368. The cubic root of 74501231 is about 420.7794125035.

Adding to 74501231 its reverse (13210547), we get a palindrome (87711778).

The spelling of 74501231 in words is "seventy-four million, five hundred one thousand, two hundred thirty-one".