45349891 has 2 divisors, whose sum is σ = 45349892. Its totient is φ = 45349890.

The previous prime is 45349883. The next prime is 45349919. The reversal of 45349891 is 19894354.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45349891 - 2³ = 45349883 is a prime.

It is a super-2 number, since 2×45349891² = 4113225227423762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45349831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22674945 + 22674946.

It is an arithmetic number, because the mean of its divisors is an integer number (22674946).

Almost surely, 2^45349891 is an apocalyptic number.

45349891 is a deficient number, since it is larger than the sum of its proper divisors (1).

45349891 is an equidigital number, since it uses as much as digits as its factorization.

45349891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 45349891 is about 6734.2327699598. The cubic root of 45349891 is about 356.6088217640.

The spelling of 45349891 in words is "forty-five million, three hundred forty-nine thousand, eight hundred ninety-one".