74152091 has 4 divisors (see below), whose sum is σ = 79856112. Its totient is φ = 68448072.

The previous prime is 74152087. The next prime is 74152097. The reversal of 74152091 is 19025147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19025147 = 3637 ⋅5231.

It is a cyclic number.

It is not a de Polignac number, because 74152091 - 2² = 74152087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74152097) 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, 2851991 + ... + 2852016.

It is an arithmetic number, because the mean of its divisors is an integer number (19964028).

Almost surely, 2^74152091 is an apocalyptic number.

74152091 is a deficient number, since it is larger than the sum of its proper divisors (5704021).

74152091 is a wasteful number, since it uses less digits than its factorization.

74152091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704020.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 74152091 is about 8611.1608392829. The cubic root of 74152091 is about 420.1210743158.

The spelling of 74152091 in words is "seventy-four million, one hundred fifty-two thousand, ninety-one".