45122531 has 2 divisors, whose sum is σ = 45122532. Its totient is φ = 45122530.

The previous prime is 45122507. The next prime is 45122533. The reversal of 45122531 is 13522154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45122531 - 2¹⁰ = 45121507 is a prime.

It is a super-2 number, since 2×45122531² = 4072085607691922, which contains 22 as substring.

Together with 45122533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45122497 and 45122506.

It is not a weakly prime, because it can be changed into another prime (45122533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22561265 + 22561266.

It is an arithmetic number, because the mean of its divisors is an integer number (22561266).

Almost surely, 2^45122531 is an apocalyptic number.

45122531 is a deficient number, since it is larger than the sum of its proper divisors (1).

45122531 is an equidigital number, since it uses as much as digits as its factorization.

45122531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 45122531 is about 6717.3306454275. The cubic root of 45122531 is about 356.0118746828.

Adding to 45122531 its reverse (13522154), we get a palindrome (58644685).

The spelling of 45122531 in words is "forty-five million, one hundred twenty-two thousand, five hundred thirty-one".