45019427 has 4 divisors (see below), whose sum is σ = 45164496. Its totient is φ = 44874360.

The previous prime is 45019423. The next prime is 45019439. The reversal of 45019427 is 72491054.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45019427 - 2² = 45019423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45019393 and 45019402.

It is not an unprimeable number, because it can be changed into a prime (45019423) 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, 72068 + ... + 72689.

It is an arithmetic number, because the mean of its divisors is an integer number (11291124).

Almost surely, 2^45019427 is an apocalyptic number.

45019427 is a deficient number, since it is larger than the sum of its proper divisors (145069).

45019427 is a wasteful number, since it uses less digits than its factorization.

45019427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145068.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 45019427 is about 6709.6517793400. The cubic root of 45019427 is about 355.7405080971.

The spelling of 45019427 in words is "forty-five million, nineteen thousand, four hundred twenty-seven".