45243013531 has 2 divisors, whose sum is σ = 45243013532. Its totient is φ = 45243013530.

The previous prime is 45243013511. The next prime is 45243013589. The reversal of 45243013531 is 13531034254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45243013531 - 2¹⁵ = 45242980763 is a prime.

It is a super-2 number, since 2×45243013531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45243013493 and 45243013502.

It is not a weakly prime, because it can be changed into another prime (45243013511) 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, 22621506765 + 22621506766.

It is an arithmetic number, because the mean of its divisors is an integer number (22621506766).

Almost surely, 2^45243013531 is an apocalyptic number.

45243013531 is a deficient number, since it is larger than the sum of its proper divisors (1).

45243013531 is an equidigital number, since it uses as much as digits as its factorization.

45243013531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 45243013531 its reverse (13531034254), we get a palindrome (58774047785).

The spelling of 45243013531 in words is "forty-five billion, two hundred forty-three million, thirteen thousand, five hundred thirty-one".