45545051 has 4 divisors (see below), whose sum is σ = 47115600. Its totient is φ = 43974504.

The previous prime is 45545047. The next prime is 45545069. The reversal of 45545051 is 15054554.

It is a happy number.

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 45545051 - 2² = 45545047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1570519 = 45545051 / (4 + 5 + 5 + 4 + 5 + 0 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45545351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785231 + ... + 785288.

It is an arithmetic number, because the mean of its divisors is an integer number (11778900).

Almost surely, 2^45545051 is an apocalyptic number.

45545051 is a deficient number, since it is larger than the sum of its proper divisors (1570549).

45545051 is a wasteful number, since it uses less digits than its factorization.

45545051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570548.

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

The square root of 45545051 is about 6748.7073577093. The cubic root of 45545051 is about 357.1196365322.

The spelling of 45545051 in words is "forty-five million, five hundred forty-five thousand, fifty-one".