45256945 has 8 divisors (see below), whose sum is σ = 54919080. Its totient is φ = 35798400.

The previous prime is 45256933. The next prime is 45256951. The reversal of 45256945 is 54965254.

It can be written as a sum of positive squares in 4 ways, for example, as 2446096 + 42810849 = 1564^2 + 6543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45256945 - 2¹⁹ = 44732657 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 45256898 and 45256907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50406 + ... + 51295.

It is an arithmetic number, because the mean of its divisors is an integer number (6864885).

Almost surely, 2^45256945 is an apocalyptic number.

It is an amenable number.

45256945 is a deficient number, since it is larger than the sum of its proper divisors (9662135).

45256945 is a wasteful number, since it uses less digits than its factorization.

45256945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101795.

The product of its digits is 216000, while the sum is 40.

The square root of 45256945 is about 6727.3282215156. The cubic root of 45256945 is about 356.3650282084.

The spelling of 45256945 in words is "forty-five million, two hundred fifty-six thousand, nine hundred forty-five".