557921641 has 4 divisors (see below), whose sum is σ = 567378000. Its totient is φ = 548465284.

The previous prime is 557921597. The next prime is 557921653. The reversal of 557921641 is 146129755.

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, and also an emirpimes, since its reverse is a distinct semiprime: 146129755 = 5 ⋅29225951.

It is a cyclic number.

It is not a de Polignac number, because 557921641 - 2¹³ = 557913449 is a prime.

It is a super-2 number, since 2×557921641² = 622553114992265762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 557921594 and 557921603.

It is not an unprimeable number, because it can be changed into a prime (557921671) 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, 4728091 + ... + 4728208.

It is an arithmetic number, because the mean of its divisors is an integer number (141844500).

Almost surely, 2^557921641 is an apocalyptic number.

It is an amenable number.

557921641 is a deficient number, since it is larger than the sum of its proper divisors (9456359).

557921641 is an equidigital number, since it uses as much as digits as its factorization.

557921641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456358.

The product of its digits is 75600, while the sum is 40.

The square root of 557921641 is about 23620.3649633108. The cubic root of 557921641 is about 823.2360922417.

The spelling of 557921641 in words is "five hundred fifty-seven million, nine hundred twenty-one thousand, six hundred forty-one".