45811247 has 2 divisors, whose sum is σ = 45811248. Its totient is φ = 45811246.

The previous prime is 45811219. The next prime is 45811267. The reversal of 45811247 is 74211854.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45811247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45811267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22905623 + 22905624.

It is an arithmetic number, because the mean of its divisors is an integer number (22905624).

Almost surely, 2^45811247 is an apocalyptic number.

45811247 is a deficient number, since it is larger than the sum of its proper divisors (1).

45811247 is an equidigital number, since it uses as much as digits as its factorization.

45811247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 32.

The square root of 45811247 is about 6768.4006234856. The cubic root of 45811247 is about 357.8140347893.

The spelling of 45811247 in words is "forty-five million, eight hundred eleven thousand, two hundred forty-seven".