45442157 has 2 divisors, whose sum is σ = 45442158. Its totient is φ = 45442156.

The previous prime is 45442123. The next prime is 45442277. The reversal of 45442157 is 75124454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44903401 + 538756 = 6701^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 45442157 - 2¹² = 45438061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45442057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22721078 + 22721079.

It is an arithmetic number, because the mean of its divisors is an integer number (22721079).

Almost surely, 2^45442157 is an apocalyptic number.

It is an amenable number.

45442157 is a deficient number, since it is larger than the sum of its proper divisors (1).

45442157 is an equidigital number, since it uses as much as digits as its factorization.

45442157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400, while the sum is 32.

The square root of 45442157 is about 6741.0798096447. The cubic root of 45442157 is about 356.8505024677.

The spelling of 45442157 in words is "forty-five million, four hundred forty-two thousand, one hundred fifty-seven".