74554261 has 8 divisors (see below), whose sum is σ = 76533048. Its totient is φ = 72600000.

The previous prime is 74554253. The next prime is 74554289. The reversal of 74554261 is 16245547.

74554261 = 6105² + 6106².

It can be written as a sum of positive squares in 4 ways, for example, as 35928036 + 38626225 = 5994^2 + 6215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(74554261) divides (74554261-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 74554261 - 2³ = 74554253 is a prime.

It is a super-2 number, since 2×74554261² = 11116675666512242, 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 (74554211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 12211.

It is an arithmetic number, because the mean of its divisors is an integer number (9566631).

Almost surely, 2^74554261 is an apocalyptic number.

74554261 is the 6106-th centered square number.

It is an amenable number.

74554261 is a deficient number, since it is larger than the sum of its proper divisors (1978787).

74554261 is a wasteful number, since it uses less digits than its factorization.

74554261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263.

The product of its digits is 33600, while the sum is 34.

The square root of 74554261 is about 8634.4809340226. The cubic root of 74554261 is about 420.8792257983.

The spelling of 74554261 in words is "seventy-four million, five hundred fifty-four thousand, two hundred sixty-one".