75570401 has 4 divisors (see below), whose sum is σ = 75605652. Its totient is φ = 75535152.

The previous prime is 75570371. The next prime is 75570409. The reversal of 75570401 is 10407557.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52998400 + 22572001 = 7280^2 + 4751^2 .

It is a cyclic number.

It is not a de Polignac number, because 75570401 - 2⁶ = 75570337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75570409) 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, 14186 + ... + 18771.

It is an arithmetic number, because the mean of its divisors is an integer number (18901413).

Almost surely, 2^75570401 is an apocalyptic number.

It is an amenable number.

75570401 is a deficient number, since it is larger than the sum of its proper divisors (35251).

75570401 is a wasteful number, since it uses less digits than its factorization.

75570401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35250.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 75570401 is about 8693.1237768710. The cubic root of 75570401 is about 422.7827333885.

Adding to 75570401 its reverse (10407557), we get a palindrome (85977958).

The spelling of 75570401 in words is "seventy-five million, five hundred seventy thousand, four hundred one".