1041555557 has 4 divisors (see below), whose sum is σ = 1190349216. Its totient is φ = 892761900.

The previous prime is 1041555551. The next prime is 1041555601. The reversal of 1041555557 is 7555551401.

It is a happy number.

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: 7555551401 = 8999 ⋅839599.

It is a cyclic number.

It is not a de Polignac number, because 1041555557 - 2⁸ = 1041555301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1041555557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1041555551) 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, 74396819 + ... + 74396832.

It is an arithmetic number, because the mean of its divisors is an integer number (297587304).

Almost surely, 2^1041555557 is an apocalyptic number.

It is an amenable number.

1041555557 is a deficient number, since it is larger than the sum of its proper divisors (148793659).

1041555557 is an equidigital number, since it uses as much as digits as its factorization.

1041555557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148793658.

The product of its (nonzero) digits is 87500, while the sum is 38.

The square root of 1041555557 is about 32273.1398689375. The cubic root of 1041555557 is about 1013.6642891041.

The spelling of 1041555557 in words is "one billion, forty-one million, five hundred fifty-five thousand, five hundred fifty-seven".