45198137 has 2 divisors, whose sum is σ = 45198138. Its totient is φ = 45198136.

The previous prime is 45198119. The next prime is 45198143. The reversal of 45198137 is 73189154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23145721 + 22052416 = 4811^2 + 4696^2 .

It is a cyclic number.

It is not a de Polignac number, because 45198137 - 2⁸ = 45197881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45198137.

It is not a weakly prime, because it can be changed into another prime (45198737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22599068 + 22599069.

It is an arithmetic number, because the mean of its divisors is an integer number (22599069).

Almost surely, 2^45198137 is an apocalyptic number.

It is an amenable number.

45198137 is a deficient number, since it is larger than the sum of its proper divisors (1).

45198137 is an equidigital number, since it uses as much as digits as its factorization.

45198137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 45198137 is about 6722.9559718921. The cubic root of 45198137 is about 356.2106047747.

The spelling of 45198137 in words is "forty-five million, one hundred ninety-eight thousand, one hundred thirty-seven".