74401057 has 4 divisors (see below), whose sum is σ = 74969136. Its totient is φ = 73832980.

The previous prime is 74401031. The next prime is 74401073. The reversal of 74401057 is 75010447.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75010447 = 43 ⋅1744429.

It is a cyclic number.

It is not a de Polignac number, because 74401057 - 2¹¹ = 74399009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74401087) 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, 283843 + ... + 284104.

It is an arithmetic number, because the mean of its divisors is an integer number (18742284).

Almost surely, 2^74401057 is an apocalyptic number.

It is an amenable number.

74401057 is a deficient number, since it is larger than the sum of its proper divisors (568079).

74401057 is a wasteful number, since it uses less digits than its factorization.

74401057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568078.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 74401057 is about 8625.6047324231. The cubic root of 74401057 is about 420.5907352494.

The spelling of 74401057 in words is "seventy-four million, four hundred one thousand, fifty-seven".