74522549 has 4 divisors (see below), whose sum is σ = 74547564. Its totient is φ = 74497536.

The previous prime is 74522521. The next prime is 74522557. The reversal of 74522549 is 94522547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94522547 = 7 ⋅13503221.

It can be written as a sum of positive squares in 2 ways, for example, as 3541924 + 70980625 = 1882^2 + 8425^2 .

It is a cyclic number.

It is not a de Polignac number, because 74522549 - 2¹⁶ = 74457013 is a prime.

It is a super-2 number, since 2×74522549² = 11107220618914802, 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 (74522249) 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, 7322 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (18636891).

Almost surely, 2^74522549 is an apocalyptic number.

It is an amenable number.

74522549 is a deficient number, since it is larger than the sum of its proper divisors (25015).

74522549 is a wasteful number, since it uses less digits than its factorization.

74522549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25014.

The product of its digits is 100800, while the sum is 38.

The square root of 74522549 is about 8632.6443804897. The cubic root of 74522549 is about 420.8195430264.

It can be divided in two parts, 7452 and 2549, that added together give a palindrome (10001).

The spelling of 74522549 in words is "seventy-four million, five hundred twenty-two thousand, five hundred forty-nine".