45881551 has 2 divisors, whose sum is σ = 45881552. Its totient is φ = 45881550.

The previous prime is 45881543. The next prime is 45881579. The reversal of 45881551 is 15518854.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45881551 - 2³ = 45881543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45881551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45881531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22940775 + 22940776.

It is an arithmetic number, because the mean of its divisors is an integer number (22940776).

Almost surely, 2^45881551 is an apocalyptic number.

45881551 is a deficient number, since it is larger than the sum of its proper divisors (1).

45881551 is an equidigital number, since it uses as much as digits as its factorization.

45881551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32000, while the sum is 37.

The square root of 45881551 is about 6773.5921784530. The cubic root of 45881551 is about 357.9969804059.

The spelling of 45881551 in words is "forty-five million, eight hundred eighty-one thousand, five hundred fifty-one".