74855549 has 4 divisors (see below), whose sum is σ = 75972864. Its totient is φ = 73738236.

The previous prime is 74855533. The next prime is 74855603. The reversal of 74855549 is 94555847.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94555847 = 149 ⋅634603.

It is a cyclic number.

It is not a de Polignac number, because 74855549 - 2⁴ = 74855533 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 (74855509) 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, 558557 + ... + 558690.

It is an arithmetic number, because the mean of its divisors is an integer number (18993216).

Almost surely, 2^74855549 is an apocalyptic number.

It is an amenable number.

74855549 is a deficient number, since it is larger than the sum of its proper divisors (1117315).

74855549 is a wasteful number, since it uses less digits than its factorization.

74855549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117314.

The product of its digits is 1008000, while the sum is 47.

The square root of 74855549 is about 8651.9101359180. The cubic root of 74855549 is about 421.4454148861.

The spelling of 74855549 in words is "seventy-four million, eight hundred fifty-five thousand, five hundred forty-nine".