1552231530391 has 12 divisors (see below), whose sum is σ = 1600212051352. Its totient is φ = 1505280798000.

The previous prime is 1552231530329. The next prime is 1552231530413. The reversal of 1552231530391 is 1930351322551.

It is not a de Polignac number, because 1552231530391 - 2⁷ = 1552231530263 is a prime.

It is a super-2 number, since 2×1552231530391² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552231530301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2216445 + ... + 2831446.

Almost surely, 2^{1552231530391} is an apocalyptic number.

1552231530391 is a deficient number, since it is larger than the sum of its proper divisors (47980520961).

1552231530391 is an frugal number, since it uses more digits than its factorization.

1552231530391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048094 (or 5048023 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 40.

The spelling of 1552231530391 in words is "one trillion, five hundred fifty-two billion, two hundred thirty-one million, five hundred thirty thousand, three hundred ninety-one".