45457549 has 2 divisors, whose sum is σ = 45457550. Its totient is φ = 45457548.

The previous prime is 45457547. The next prime is 45457583. The reversal of 45457549 is 94575454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 8369449 = 6090^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 45457549 - 2¹ = 45457547 is a prime.

It is a super-2 number, since 2×45457549² = 4132777522174802, which contains 22 as substring.

Together with 45457547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45457543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22728774 + 22728775.

It is an arithmetic number, because the mean of its divisors is an integer number (22728775).

Almost surely, 2^45457549 is an apocalyptic number.

It is an amenable number.

45457549 is a deficient number, since it is larger than the sum of its proper divisors (1).

45457549 is an equidigital number, since it uses as much as digits as its factorization.

45457549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 43.

The square root of 45457549 is about 6742.2213698454. The cubic root of 45457549 is about 356.8907882820.

The spelling of 45457549 in words is "forty-five million, four hundred fifty-seven thousand, five hundred forty-nine".