45207881 has 2 divisors, whose sum is σ = 45207882. Its totient is φ = 45207880.

The previous prime is 45207847. The next prime is 45207907. The reversal of 45207881 is 18870254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31584400 + 13623481 = 5620^2 + 3691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45207881 is a prime.

It is a super-2 number, since 2×45207881² = 4087505009020322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45207181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22603940 + 22603941.

It is an arithmetic number, because the mean of its divisors is an integer number (22603941).

Almost surely, 2^45207881 is an apocalyptic number.

It is an amenable number.

45207881 is a deficient number, since it is larger than the sum of its proper divisors (1).

45207881 is an equidigital number, since it uses as much as digits as its factorization.

45207881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 45207881 is about 6723.6806140685. The cubic root of 45207881 is about 356.2362007172.

The spelling of 45207881 in words is "forty-five million, two hundred seven thousand, eight hundred eighty-one".