1055556587537 has 8 divisors (see below), whose sum is σ = 1075493255040. Its totient is φ = 1035620679600.

The previous prime is 1055556587509. The next prime is 1055556587539. The reversal of 1055556587537 is 7357856555501.

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 1055556587537 - 2¹⁸ = 1055556325393 is a prime.

It is a super-2 number, since 2×1055556587537² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055556587537.

It is not an unprimeable number, because it can be changed into a prime (1055556587539) 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, 3172664 + ... + 3489542.

It is an arithmetic number, because the mean of its divisors is an integer number (134436656880).

Almost surely, 2^{1055556587537} is an apocalyptic number.

It is an amenable number.

1055556587537 is a deficient number, since it is larger than the sum of its proper divisors (19936667503).

1055556587537 is an equidigital number, since it uses as much as digits as its factorization.

1055556587537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379783.

The product of its (nonzero) digits is 110250000, while the sum is 62.

The spelling of 1055556587537 in words is "one trillion, fifty-five billion, five hundred fifty-six million, five hundred eighty-seven thousand, five hundred thirty-seven".