45223987 has 2 divisors, whose sum is σ = 45223988. Its totient is φ = 45223986.

The previous prime is 45223949. The next prime is 45223993. The reversal of 45223987 is 78932254.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45223987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45223907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22611993 + 22611994.

It is an arithmetic number, because the mean of its divisors is an integer number (22611994).

Almost surely, 2^45223987 is an apocalyptic number.

45223987 is a deficient number, since it is larger than the sum of its proper divisors (1).

45223987 is an equidigital number, since it uses as much as digits as its factorization.

45223987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 45223987 is about 6724.8782145107. The cubic root of 45223987 is about 356.2785005617.

The spelling of 45223987 in words is "forty-five million, two hundred twenty-three thousand, nine hundred eighty-seven".