45405131 has 2 divisors, whose sum is σ = 45405132. Its totient is φ = 45405130.

The previous prime is 45405127. The next prime is 45405133. The reversal of 45405131 is 13150454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45405131 - 2² = 45405127 is a prime.

It is a super-2 number, since 2×45405131² = 4123251842254322, which contains 22 as substring.

Together with 45405133, 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 = 45405097 and 45405106.

It is not a weakly prime, because it can be changed into another prime (45405133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22702565 + 22702566.

It is an arithmetic number, because the mean of its divisors is an integer number (22702566).

Almost surely, 2^45405131 is an apocalyptic number.

45405131 is a deficient number, since it is larger than the sum of its proper divisors (1).

45405131 is an equidigital number, since it uses as much as digits as its factorization.

45405131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 45405131 is about 6738.3329540770. The cubic root of 45405131 is about 356.7535562416.

Adding to 45405131 its reverse (13150454), we get a palindrome (58555585).

The spelling of 45405131 in words is "forty-five million, four hundred five thousand, one hundred thirty-one".