1355456545531 has 24 divisors (see below), whose sum is σ = 1516888041984. Its totient is φ = 1210035750000.

The previous prime is 1355456545529. The next prime is 1355456545571.

1355456545531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1355456545531 - 2¹ = 1355456545529 is a prime.

It is a super-2 number, since 2×1355456545531² (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 (1355456545501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1842046 + ... + 2470636.

It is an arithmetic number, because the mean of its divisors is an integer number (63203668416).

Almost surely, 2^{1355456545531} is an apocalyptic number.

1355456545531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1355456545531 is a deficient number, since it is larger than the sum of its proper divisors (161431496453).

1355456545531 is a wasteful number, since it uses less digits than its factorization.

1355456545531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628935 (or 628924 counting only the distinct ones).

The product of its digits is 13500000, while the sum is 52.

The spelling of 1355456545531 in words is "one trillion, three hundred fifty-five billion, four hundred fifty-six million, five hundred forty-five thousand, five hundred thirty-one".