1551450253231 has 2 divisors, whose sum is σ = 1551450253232. Its totient is φ = 1551450253230.

The previous prime is 1551450253193. The next prime is 1551450253273. The reversal of 1551450253231 is 1323520541551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1551450253231 - 2⁷ = 1551450253103 is a prime.

It is a super-2 number, since 2×1551450253231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551450253831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775725126615 + 775725126616.

It is an arithmetic number, because the mean of its divisors is an integer number (775725126616).

Almost surely, 2^{1551450253231} is an apocalyptic number.

1551450253231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551450253231 is an equidigital number, since it uses as much as digits as its factorization.

1551450253231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 1551450253231 its reverse (1323520541551), we get a palindrome (2874970794782).

The spelling of 1551450253231 in words is "one trillion, five hundred fifty-one billion, four hundred fifty million, two hundred fifty-three thousand, two hundred thirty-one".