53103221531 has 2 divisors, whose sum is σ = 53103221532. Its totient is φ = 53103221530.

The previous prime is 53103221489. The next prime is 53103221551. The reversal of 53103221531 is 13512230135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53103221531 - 2²² = 53099027227 is a prime.

It is a super-2 number, since 2×53103221531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53103221531.

It is not a weakly prime, because it can be changed into another prime (53103221551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26551610765 + 26551610766.

It is an arithmetic number, because the mean of its divisors is an integer number (26551610766).

Almost surely, 2^53103221531 is an apocalyptic number.

53103221531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53103221531 is an equidigital number, since it uses as much as digits as its factorization.

53103221531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 53103221531 its reverse (13512230135), we get a palindrome (66615451666).

The spelling of 53103221531 in words is "fifty-three billion, one hundred three million, two hundred twenty-one thousand, five hundred thirty-one".