1072555887531 has 4 divisors (see below), whose sum is σ = 1430074516712. Its totient is φ = 715037258352.

The previous prime is 1072555887517. The next prime is 1072555887569. The reversal of 1072555887531 is 1357885552701.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1072555887531 - 2³⁹ = 522800073643 is a prime.

It is a super-2 number, since 2×1072555887531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072555887581) 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, 178759314586 + ... + 178759314591.

It is an arithmetic number, because the mean of its divisors is an integer number (357518629178).

Almost surely, 2^{1072555887531} is an apocalyptic number.

1072555887531 is a deficient number, since it is larger than the sum of its proper divisors (357518629181).

1072555887531 is an equidigital number, since it uses as much as digits as its factorization.

1072555887531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357518629180.

The product of its (nonzero) digits is 11760000, while the sum is 57.

The spelling of 1072555887531 in words is "one trillion, seventy-two billion, five hundred fifty-five million, eight hundred eighty-seven thousand, five hundred thirty-one".