45149279 has 4 divisors (see below), whose sum is σ = 51599184. Its totient is φ = 38699376.

The previous prime is 45149257. The next prime is 45149381. The reversal of 45149279 is 97294154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97294154 = 2 ⋅48647077.

It is a cyclic number.

It is not a de Polignac number, because 45149279 - 2¹⁶ = 45083743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45149179) 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, 3224942 + ... + 3224955.

It is an arithmetic number, because the mean of its divisors is an integer number (12899796).

Almost surely, 2^45149279 is an apocalyptic number.

45149279 is a deficient number, since it is larger than the sum of its proper divisors (6449905).

45149279 is an equidigital number, since it uses as much as digits as its factorization.

45149279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449904.

The product of its digits is 90720, while the sum is 41.

The square root of 45149279 is about 6719.3213198953. The cubic root of 45149279 is about 356.0822070601.

The spelling of 45149279 in words is "forty-five million, one hundred forty-nine thousand, two hundred seventy-nine".