45012381 has 4 divisors (see below), whose sum is σ = 60016512. Its totient is φ = 30008252.

The previous prime is 45012377. The next prime is 45012427. The reversal of 45012381 is 18321054.

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 45012381 - 2² = 45012377 is a prime.

It is a super-2 number, since 2×45012381² = 4052228886578322, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45012361) 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, 7502061 + ... + 7502066.

It is an arithmetic number, because the mean of its divisors is an integer number (15004128).

Almost surely, 2^45012381 is an apocalyptic number.

It is an amenable number.

45012381 is a deficient number, since it is larger than the sum of its proper divisors (15004131).

45012381 is a wasteful number, since it uses less digits than its factorization.

45012381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15004130.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 45012381 is about 6709.1266942874. The cubic root of 45012381 is about 355.7219481215.

The spelling of 45012381 in words is "forty-five million, twelve thousand, three hundred eighty-one".