1056523954155 has 16 divisors (see below), whose sum is σ = 1690470053664. Its totient is φ = 563468866560.

The previous prime is 1056523954133. The next prime is 1056523954159. The reversal of 1056523954155 is 5514593256501.

It is not a de Polignac number, because 1056523954155 - 2⁶ = 1056523954091 is a prime.

It is a super-2 number, since 2×1056523954155² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056523954098 and 1056523954107.

It is not an unprimeable number, because it can be changed into a prime (1056523954159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201147 + ... + 1467483.

It is an arithmetic number, because the mean of its divisors is an integer number (105654378354).

Almost surely, 2^{1056523954155} is an apocalyptic number.

1056523954155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1056523954155 is a deficient number, since it is larger than the sum of its proper divisors (633946099509).

1056523954155 is a wasteful number, since it uses less digits than its factorization.

1056523954155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321966.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 1056523954155 in words is "one trillion, fifty-six billion, five hundred twenty-three million, nine hundred fifty-four thousand, one hundred fifty-five".