74455121 has 8 divisors (see below), whose sum is σ = 84899304. Its totient is φ = 64684800.

The previous prime is 74455111. The next prime is 74455123. The reversal of 74455121 is 12155447.

It can be written as a sum of positive squares in 4 ways, for example, as 1113025 + 73342096 = 1055^2 + 8564^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74455121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74455123) 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, 168230 + ... + 168671.

It is an arithmetic number, because the mean of its divisors is an integer number (10612413).

Almost surely, 2^74455121 is an apocalyptic number.

It is an amenable number.

74455121 is a deficient number, since it is larger than the sum of its proper divisors (10444183).

74455121 is a wasteful number, since it uses less digits than its factorization.

74455121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336931.

The product of its digits is 5600, while the sum is 29.

The square root of 74455121 is about 8628.7380885040. The cubic root of 74455121 is about 420.6925855586.

The spelling of 74455121 in words is "seventy-four million, four hundred fifty-five thousand, one hundred twenty-one".