45507898 has 4 divisors (see below), whose sum is σ = 68261850. Its totient is φ = 22753948.

The previous prime is 45507893. The next prime is 45507911. The reversal of 45507898 is 89870554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89870554 = 2 ⋅44935277.

It can be written as a sum of positive squares in only one way, i.e., 33790969 + 11716929 = 5813^2 + 3423^2 .

It is not an unprimeable number, because it can be changed into a prime (45507893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11376973 + ... + 11376976.

Almost surely, 2^45507898 is an apocalyptic number.

45507898 is a deficient number, since it is larger than the sum of its proper divisors (22753952).

45507898 is a wasteful number, since it uses less digits than its factorization.

45507898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22753951.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 45507898 is about 6745.9541949231. The cubic root of 45507898 is about 357.0225043157.

The spelling of 45507898 in words is "forty-five million, five hundred seven thousand, eight hundred ninety-eight".