45181387 has 8 divisors (see below), whose sum is σ = 46136304. Its totient is φ = 44230368.

The previous prime is 45181363. The next prime is 45181397. The reversal of 45181387 is 78318154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45181387 - 2¹⁵ = 45148619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45181307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38268 + ... + 39430.

It is an arithmetic number, because the mean of its divisors is an integer number (5767038).

Almost surely, 2^45181387 is an apocalyptic number.

45181387 is a deficient number, since it is larger than the sum of its proper divisors (954917).

45181387 is a wasteful number, since it uses less digits than its factorization.

45181387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949.

The product of its digits is 26880, while the sum is 37.

The square root of 45181387 is about 6721.7101246632. The cubic root of 45181387 is about 356.1665965831.

The spelling of 45181387 in words is "forty-five million, one hundred eighty-one thousand, three hundred eighty-seven".