45515546 has 4 divisors (see below), whose sum is σ = 68273322. Its totient is φ = 22757772.

The previous prime is 45515539. The next prime is 45515563. The reversal of 45515546 is 64551554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64551554 = 2 ⋅32275777.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 3200521 = 6505^2 + 1789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11378885 + ... + 11378888.

Almost surely, 2^45515546 is an apocalyptic number.

45515546 is a deficient number, since it is larger than the sum of its proper divisors (22757776).

45515546 is a wasteful number, since it uses less digits than its factorization.

45515546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22757775.

The product of its digits is 60000, while the sum is 35.

The square root of 45515546 is about 6746.5210293899. The cubic root of 45515546 is about 357.0425034461.

The spelling of 45515546 in words is "forty-five million, five hundred fifteen thousand, five hundred forty-six".