556740001 has 4 divisors (see below), whose sum is σ = 580946112. Its totient is φ = 532533892.

The previous prime is 556739993. The next prime is 556740007. The reversal of 556740001 is 100047655.

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: 100047655 = 5 ⋅20009531.

It is a cyclic number.

It is not a de Polignac number, because 556740001 - 2³ = 556739993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556740007) 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, 12103021 + ... + 12103066.

It is an arithmetic number, because the mean of its divisors is an integer number (145236528).

Almost surely, 2^556740001 is an apocalyptic number.

It is an amenable number.

556740001 is a deficient number, since it is larger than the sum of its proper divisors (24206111).

556740001 is a wasteful number, since it uses less digits than its factorization.

556740001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24206110.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 556740001 is about 23595.3385438734. The cubic root of 556740001 is about 822.6544954807.

Adding to 556740001 its reverse (100047655), we get a palindrome (656787656).

The spelling of 556740001 in words is "five hundred fifty-six million, seven hundred forty thousand, one".