45540551 has 6 divisors (see below), whose sum is σ = 52975800. Its totient is φ = 39034716.

The previous prime is 45540533. The next prime is 45540559. The reversal of 45540551 is 15504554.

It is a happy number.

It is not a de Polignac number, because 45540551 - 2⁶ = 45540487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45540559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464651 + ... + 464748.

It is an arithmetic number, because the mean of its divisors is an integer number (8829300).

Almost surely, 2^45540551 is an apocalyptic number.

45540551 is a deficient number, since it is larger than the sum of its proper divisors (7435249).

45540551 is an equidigital number, since it uses as much as digits as its factorization.

45540551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929413 (or 929406 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 45540551 is about 6748.3739522940. The cubic root of 45540551 is about 357.1078746154.

The spelling of 45540551 in words is "forty-five million, five hundred forty thousand, five hundred fifty-one".