45144381 has 8 divisors (see below), whose sum is σ = 61212960. Its totient is φ = 29586032.

The previous prime is 45144371. The next prime is 45144431. The reversal of 45144381 is 18344154.

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 45144381 - 2⁵ = 45144349 is a prime.

It is a super-2 number, since 2×45144381² = 4076030271746322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45144301) 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, 127350 + ... + 127703.

It is an arithmetic number, because the mean of its divisors is an integer number (7651620).

Almost surely, 2^45144381 is an apocalyptic number.

It is an amenable number.

45144381 is a deficient number, since it is larger than the sum of its proper divisors (16068579).

45144381 is a wasteful number, since it uses less digits than its factorization.

45144381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255115.

The product of its digits is 7680, while the sum is 30.

The square root of 45144381 is about 6718.9568386767. The cubic root of 45144381 is about 356.0693301197.

The spelling of 45144381 in words is "forty-five million, one hundred forty-four thousand, three hundred eighty-one".