1553272631 has 2 divisors, whose sum is σ = 1553272632. Its totient is φ = 1553272630.

The previous prime is 1553272613. The next prime is 1553272661. The reversal of 1553272631 is 1362723551.

Together with previous prime (1553272613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1553272631 - 2¹⁰ = 1553271607 is a prime.

It is a super-2 number, since 2×1553272631² = 4825311732427324322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1553272591 and 1553272600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553272601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776636315 + 776636316.

It is an arithmetic number, because the mean of its divisors is an integer number (776636316).

Almost surely, 2^1553272631 is an apocalyptic number.

1553272631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553272631 is an equidigital number, since it uses as much as digits as its factorization.

1553272631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 1553272631 is about 39411.5799099706. The cubic root of 1553272631 is about 1158.1084488822.

The spelling of 1553272631 in words is "one billion, five hundred fifty-three million, two hundred seventy-two thousand, six hundred thirty-one".