45157447 has 2 divisors, whose sum is σ = 45157448. Its totient is φ = 45157446.

The previous prime is 45157429. The next prime is 45157481. The reversal of 45157447 is 74475154.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45157447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45157747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22578723 + 22578724.

It is an arithmetic number, because the mean of its divisors is an integer number (22578724).

Almost surely, 2^45157447 is an apocalyptic number.

45157447 is a deficient number, since it is larger than the sum of its proper divisors (1).

45157447 is an equidigital number, since it uses as much as digits as its factorization.

45157447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 37.

The square root of 45157447 is about 6719.9290918878. The cubic root of 45157447 is about 356.1036788248.

The spelling of 45157447 in words is "forty-five million, one hundred fifty-seven thousand, four hundred forty-seven".