45194539 has 4 divisors (see below), whose sum is σ = 48671056. Its totient is φ = 41718024.

The previous prime is 45194537. The next prime is 45194543. The reversal of 45194539 is 93549154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93549154 = 2 ⋅46774577.

It is a cyclic number.

It is not a de Polignac number, because 45194539 - 2¹ = 45194537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45194533) 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, 1738239 + ... + 1738264.

It is an arithmetic number, because the mean of its divisors is an integer number (12167764).

Almost surely, 2^45194539 is an apocalyptic number.

45194539 is a deficient number, since it is larger than the sum of its proper divisors (3476517).

45194539 is a wasteful number, since it uses less digits than its factorization.

45194539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476516.

The product of its digits is 97200, while the sum is 40.

The square root of 45194539 is about 6722.6883759401. The cubic root of 45194539 is about 356.2011524695.

The spelling of 45194539 in words is "forty-five million, one hundred ninety-four thousand, five hundred thirty-nine".