74499151 has 4 divisors (see below), whose sum is σ = 78881472. Its totient is φ = 70116832.

The previous prime is 74499149. The next prime is 74499157. The reversal of 74499151 is 15199447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15199447 = 2311 ⋅6577.

It is a cyclic number.

It is not a de Polignac number, because 74499151 - 2¹ = 74499149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74499157) 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, 2191135 + ... + 2191168.

It is an arithmetic number, because the mean of its divisors is an integer number (19720368).

Almost surely, 2^74499151 is an apocalyptic number.

74499151 is a deficient number, since it is larger than the sum of its proper divisors (4382321).

74499151 is a wasteful number, since it uses less digits than its factorization.

74499151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382320.

The product of its digits is 45360, while the sum is 40.

The square root of 74499151 is about 8631.2890694264. The cubic root of 74499151 is about 420.7754965534.

The spelling of 74499151 in words is "seventy-four million, four hundred ninety-nine thousand, one hundred fifty-one".