45251489 has 4 divisors (see below), whose sum is σ = 45522624. Its totient is φ = 44980356.

The previous prime is 45251473. The next prime is 45251519. The reversal of 45251489 is 98415254.

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 45251489 - 2⁴ = 45251473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45251429) 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, 135317 + ... + 135650.

It is an arithmetic number, because the mean of its divisors is an integer number (11380656).

Almost surely, 2^45251489 is an apocalyptic number.

It is an amenable number.

45251489 is a deficient number, since it is larger than the sum of its proper divisors (271135).

45251489 is a wasteful number, since it uses less digits than its factorization.

45251489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271134.

The product of its digits is 57600, while the sum is 38.

The square root of 45251489 is about 6726.9226991248. The cubic root of 45251489 is about 356.3507069756.

The spelling of 45251489 in words is "forty-five million, two hundred fifty-one thousand, four hundred eighty-nine".