72574401 has 4 divisors (see below), whose sum is σ = 96765872. Its totient is φ = 48382932.

The previous prime is 72574351. The next prime is 72574417. The reversal of 72574401 is 10447527.

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.

It is not a de Polignac number, because 72574401 - 2¹⁸ = 72312257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72574001) 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, 12095731 + ... + 12095736.

It is an arithmetic number, because the mean of its divisors is an integer number (24191468).

Almost surely, 2^72574401 is an apocalyptic number.

It is an amenable number.

72574401 is a deficient number, since it is larger than the sum of its proper divisors (24191471).

72574401 is a wasteful number, since it uses less digits than its factorization.

72574401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24191470.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 72574401 is about 8519.0610398095. The cubic root of 72574401 is about 417.1201340004.

The spelling of 72574401 in words is "seventy-two million, five hundred seventy-four thousand, four hundred one".