74251261 has 8 divisors (see below), whose sum is σ = 85699584. Its totient is φ = 63013200.

The previous prime is 74251253. The next prime is 74251271. The reversal of 74251261 is 16215247.

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

It is a cyclic number.

It is not a de Polignac number, because 74251261 - 2³ = 74251253 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 (74251201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51805 + ... + 53218.

It is an arithmetic number, because the mean of its divisors is an integer number (10712448).

Almost surely, 2^74251261 is an apocalyptic number.

It is an amenable number.

74251261 is a deficient number, since it is larger than the sum of its proper divisors (11448323).

74251261 is a wasteful number, since it uses less digits than its factorization.

74251261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105131.

The product of its digits is 3360, while the sum is 28.

The square root of 74251261 is about 8616.9171401378. The cubic root of 74251261 is about 420.3082789597.

It can be divided in two parts, 742 and 51261, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 74251261 in words is "seventy-four million, two hundred fifty-one thousand, two hundred sixty-one".