45242557 has 12 divisors (see below), whose sum is σ = 47293596. Its totient is φ = 43254080.

The previous prime is 45242531. The next prime is 45242563. The reversal of 45242557 is 75524254.

It can be written as a sum of positive squares in 2 ways, for example, as 2353156 + 42889401 = 1534^2 + 6549^2 .

It is not a de Polignac number, because 45242557 - 2¹⁹ = 44718269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45242507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142563 + ... + 142879.

It is an arithmetic number, because the mean of its divisors is an integer number (3941133).

Almost surely, 2^45242557 is an apocalyptic number.

It is an amenable number.

45242557 is a deficient number, since it is larger than the sum of its proper divisors (2051039).

45242557 is an equidigital number, since it uses as much as digits as its factorization.

45242557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 417 counting only the distinct ones).

The product of its digits is 56000, while the sum is 34.

The square root of 45242557 is about 6726.2587669521. The cubic root of 45242557 is about 356.3272592466.

The spelling of 45242557 in words is "forty-five million, two hundred forty-two thousand, five hundred fifty-seven".