45278529 has 4 divisors (see below), whose sum is σ = 60371376. Its totient is φ = 30185684.

The previous prime is 45278521. The next prime is 45278537. The reversal of 45278529 is 92587254.

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 an interprime number because it is at equal distance from previous prime (45278521) and next prime (45278537).

It is a cyclic number.

It is not a de Polignac number, because 45278529 - 2³ = 45278521 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (45278521) 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, 7546419 + ... + 7546424.

It is an arithmetic number, because the mean of its divisors is an integer number (15092844).

Almost surely, 2^45278529 is an apocalyptic number.

It is an amenable number.

45278529 is a deficient number, since it is larger than the sum of its proper divisors (15092847).

45278529 is a wasteful number, since it uses less digits than its factorization.

45278529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15092846.

The product of its digits is 201600, while the sum is 42.

The square root of 45278529 is about 6728.9322332745. The cubic root of 45278529 is about 356.4216718926.

The spelling of 45278529 in words is "forty-five million, two hundred seventy-eight thousand, five hundred twenty-nine".