45453019 has 4 divisors (see below), whose sum is σ = 48126744. Its totient is φ = 42779296.

The previous prime is 45453011. The next prime is 45453047. The reversal of 45453019 is 91035454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91035454 = 2 ⋅45517727.

It is a cyclic number.

It is not a de Polignac number, because 45453019 - 2³ = 45453011 is a prime.

It is a super-2 number, since 2×45453019² = 4131953872428722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45453011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336837 + ... + 1336870.

It is an arithmetic number, because the mean of its divisors is an integer number (12031686).

Almost surely, 2^45453019 is an apocalyptic number.

45453019 is a deficient number, since it is larger than the sum of its proper divisors (2673725).

45453019 is a wasteful number, since it uses less digits than its factorization.

45453019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673724.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 45453019 is about 6741.8854187831. The cubic root of 45453019 is about 356.8789327596.

The spelling of 45453019 in words is "forty-five million, four hundred fifty-three thousand, nineteen".