1290372553 has 2 divisors, whose sum is σ = 1290372554. Its totient is φ = 1290372552.

The previous prime is 1290372547. The next prime is 1290372571. The reversal of 1290372553 is 3552730921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1172172169 + 118200384 = 34237^2 + 10872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1290372553 is a prime.

It is a super-2 number, since 2×1290372553² = 3330122651071475618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1290372533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645186276 + 645186277.

It is an arithmetic number, because the mean of its divisors is an integer number (645186277).

Almost surely, 2^1290372553 is an apocalyptic number.

It is an amenable number.

1290372553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290372553 is an equidigital number, since it uses as much as digits as its factorization.

1290372553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 1290372553 is about 35921.7559843613. The cubic root of 1290372553 is about 1088.6920183119.

The spelling of 1290372553 in words is "one billion, two hundred ninety million, three hundred seventy-two thousand, five hundred fifty-three".