74954921 has 4 divisors (see below), whose sum is σ = 79364052. Its totient is φ = 70545792.

The previous prime is 74954903. The next prime is 74954923. The reversal of 74954921 is 12945947.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40896025 + 34058896 = 6395^2 + 5836^2 .

It is a cyclic number.

It is not a de Polignac number, because 74954921 - 2⁶ = 74954857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74954923) 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, 2204540 + ... + 2204573.

It is an arithmetic number, because the mean of its divisors is an integer number (19841013).

Almost surely, 2^74954921 is an apocalyptic number.

It is an amenable number.

74954921 is a deficient number, since it is larger than the sum of its proper divisors (4409131).

74954921 is a wasteful number, since it uses less digits than its factorization.

74954921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409130.

The product of its digits is 90720, while the sum is 41.

The square root of 74954921 is about 8657.6510093674. The cubic root of 74954921 is about 421.6318243815.

The spelling of 74954921 in words is "seventy-four million, nine hundred fifty-four thousand, nine hundred twenty-one".