45256551 has 4 divisors (see below), whose sum is σ = 60342072. Its totient is φ = 30171032.

The previous prime is 45256543. The next prime is 45256573. The reversal of 45256551 is 15565254.

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 45256551 - 2³ = 45256543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45256531) 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, 7542756 + ... + 7542761.

It is an arithmetic number, because the mean of its divisors is an integer number (15085518).

Almost surely, 2^45256551 is an apocalyptic number.

45256551 is a deficient number, since it is larger than the sum of its proper divisors (15085521).

45256551 is a wasteful number, since it uses less digits than its factorization.

45256551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15085520.

The product of its digits is 30000, while the sum is 33.

The square root of 45256551 is about 6727.2989379096. The cubic root of 45256551 is about 356.3639940524.

The spelling of 45256551 in words is "forty-five million, two hundred fifty-six thousand, five hundred fifty-one".