975550557 has 4 divisors (see below), whose sum is σ = 1300734080. Its totient is φ = 650367036.

The previous prime is 975550529. The next prime is 975550561. The reversal of 975550557 is 755055579.

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 not a de Polignac number, because 975550557 - 2⁶ = 975550493 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 (975550657) 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, 162591757 + ... + 162591762.

It is an arithmetic number, because the mean of its divisors is an integer number (325183520).

Almost surely, 2^975550557 is an apocalyptic number.

It is an amenable number.

975550557 is a deficient number, since it is larger than the sum of its proper divisors (325183523).

975550557 is a wasteful number, since it uses less digits than its factorization.

975550557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325183522.

The product of its (nonzero) digits is 1378125, while the sum is 48.

The square root of 975550557 is about 31233.8047154041. The cubic root of 975550557 is about 991.7828490418.

The spelling of 975550557 in words is "nine hundred seventy-five million, five hundred fifty thousand, five hundred fifty-seven".