220970557 has 8 divisors (see below), whose sum is σ = 222393600. Its totient is φ = 219552144.

The previous prime is 220970543. The next prime is 220970579. The reversal of 220970557 is 755079022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220970557 - 2¹⁵ = 220937789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220970537) 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, 153919 + ... + 155347.

It is an arithmetic number, because the mean of its divisors is an integer number (27799200).

Almost surely, 2^220970557 is an apocalyptic number.

It is an amenable number.

220970557 is a deficient number, since it is larger than the sum of its proper divisors (1423043).

220970557 is a wasteful number, since it uses less digits than its factorization.

220970557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 220970557 is about 14865.0784390800. The cubic root of 220970557 is about 604.5675091302.

The spelling of 220970557 in words is "two hundred twenty million, nine hundred seventy thousand, five hundred fifty-seven".