45494391 has 16 divisors (see below), whose sum is σ = 65341440. Its totient is φ = 28073760.

The previous prime is 45494389. The next prime is 45494401. The reversal of 45494391 is 19349454.

It is not a de Polignac number, because 45494391 - 2¹ = 45494389 is a prime.

It is a super-2 number, since 2×45494391² = 4139479224921762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45494381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8496 + ... + 12773.

It is an arithmetic number, because the mean of its divisors is an integer number (4083840).

Almost surely, 2^45494391 is an apocalyptic number.

45494391 is a deficient number, since it is larger than the sum of its proper divisors (19847049).

45494391 is a wasteful number, since it uses less digits than its factorization.

45494391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21326.

The product of its digits is 77760, while the sum is 39.

The square root of 45494391 is about 6744.9530020601. The cubic root of 45494391 is about 356.9871787249.

The spelling of 45494391 in words is "forty-five million, four hundred ninety-four thousand, three hundred ninety-one".