45394381 has 4 divisors (see below), whose sum is σ = 45409792. Its totient is φ = 45378972.

The previous prime is 45394379. The next prime is 45394417. The reversal of 45394381 is 18349354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45394381 - 2¹ = 45394379 is a prime.

It is a super-2 number, since 2×45394381² = 4121299652746322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45394381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45397381) 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, 1755 + ... + 9688.

It is an arithmetic number, because the mean of its divisors is an integer number (11352448).

Almost surely, 2^45394381 is an apocalyptic number.

It is an amenable number.

45394381 is a deficient number, since it is larger than the sum of its proper divisors (15411).

45394381 is a wasteful number, since it uses less digits than its factorization.

45394381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15410.

The product of its digits is 51840, while the sum is 37.

The square root of 45394381 is about 6737.5352318188. The cubic root of 45394381 is about 356.7253993398.

The spelling of 45394381 in words is "forty-five million, three hundred ninety-four thousand, three hundred eighty-one".