45612381 has 8 divisors (see below), whose sum is σ = 63460800. Its totient is φ = 29086112.

The previous prime is 45612373. The next prime is 45612397. The reversal of 45612381 is 18321654.

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 45612381 - 2³ = 45612373 is a prime.

It is a super-2 number, since 2×45612381² = 4160978600978322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45612361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330456 + ... + 330593.

It is an arithmetic number, because the mean of its divisors is an integer number (7932600).

Almost surely, 2^45612381 is an apocalyptic number.

It is an amenable number.

45612381 is a deficient number, since it is larger than the sum of its proper divisors (17848419).

45612381 is a wasteful number, since it uses less digits than its factorization.

45612381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661075.

The product of its digits is 5760, while the sum is 30.

The square root of 45612381 is about 6753.6938781677. The cubic root of 45612381 is about 357.2955285020.

The spelling of 45612381 in words is "forty-five million, six hundred twelve thousand, three hundred eighty-one".