45149147 has 4 divisors (see below), whose sum is σ = 45363336. Its totient is φ = 44934960.

The previous prime is 45149141. The next prime is 45149173. The reversal of 45149147 is 74194154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45149147 - 2⁴ = 45149131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45149141) 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, 106778 + ... + 107199.

It is an arithmetic number, because the mean of its divisors is an integer number (11340834).

Almost surely, 2^45149147 is an apocalyptic number.

45149147 is a deficient number, since it is larger than the sum of its proper divisors (214189).

45149147 is a wasteful number, since it uses less digits than its factorization.

45149147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214188.

The product of its digits is 20160, while the sum is 35.

The square root of 45149147 is about 6719.3114974676. The cubic root of 45149147 is about 356.0818600416.

The spelling of 45149147 in words is "forty-five million, one hundred forty-nine thousand, one hundred forty-seven".