45390551 has 2 divisors, whose sum is σ = 45390552. Its totient is φ = 45390550.

The previous prime is 45390547. The next prime is 45390559. The reversal of 45390551 is 15509354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45390551 - 2² = 45390547 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45390559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22695275 + 22695276.

It is an arithmetic number, because the mean of its divisors is an integer number (22695276).

Almost surely, 2^45390551 is an apocalyptic number.

45390551 is a deficient number, since it is larger than the sum of its proper divisors (1).

45390551 is an equidigital number, since it uses as much as digits as its factorization.

45390551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 45390551 is about 6737.2509972540. The cubic root of 45390551 is about 356.7153665511.

The spelling of 45390551 in words is "forty-five million, three hundred ninety thousand, five hundred fifty-one".