75270561 has 4 divisors (see below), whose sum is σ = 100360752. Its totient is φ = 50180372.

The previous prime is 75270551. The next prime is 75270581. The reversal of 75270561 is 16507257.

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 a cyclic number.

It is not a de Polignac number, because 75270561 - 2⁶ = 75270497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75270551) 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, 12545091 + ... + 12545096.

It is an arithmetic number, because the mean of its divisors is an integer number (25090188).

Almost surely, 2^75270561 is an apocalyptic number.

It is an amenable number.

75270561 is a deficient number, since it is larger than the sum of its proper divisors (25090191).

75270561 is a wasteful number, since it uses less digits than its factorization.

75270561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25090190.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 75270561 is about 8675.8608218436. The cubic root of 75270561 is about 422.2228351510. Note that the first 3 decimals are identical.

The spelling of 75270561 in words is "seventy-five million, two hundred seventy thousand, five hundred sixty-one".