75564401 has 8 divisors (see below), whose sum is σ = 85276800. Its totient is φ = 66325840.

The previous prime is 75564319. The next prime is 75564413. The reversal of 75564401 is 10446557.

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-75564401 is a prime.

It is a super-4 number, since 4×75564401⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75564451) 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, 118121 + ... + 118758.

It is an arithmetic number, because the mean of its divisors is an integer number (10659600).

Almost surely, 2^75564401 is an apocalyptic number.

It is an amenable number.

75564401 is a deficient number, since it is larger than the sum of its proper divisors (9712399).

75564401 is a wasteful number, since it uses less digits than its factorization.

75564401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236919.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 75564401 is about 8692.7786696775. The cubic root of 75564401 is about 422.7715439832.

It can be divided in two parts, 755 and 64401, that added together give a palindrome (65156).

The spelling of 75564401 in words is "seventy-five million, five hundred sixty-four thousand, four hundred one".