45542215 has 4 divisors (see below), whose sum is σ = 54650664. Its totient is φ = 36433768.

The previous prime is 45542207. The next prime is 45542219. The reversal of 45542215 is 51224554.

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 45542215 - 2³ = 45542207 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 (45542219) 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, 4554217 + ... + 4554226.

It is an arithmetic number, because the mean of its divisors is an integer number (13662666).

Almost surely, 2^45542215 is an apocalyptic number.

45542215 is a deficient number, since it is larger than the sum of its proper divisors (9108449).

45542215 is an equidigital number, since it uses as much as digits as its factorization.

45542215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108448.

The product of its digits is 8000, while the sum is 28.

The square root of 45542215 is about 6748.4972401269. The cubic root of 45542215 is about 357.1122240012.

Adding to 45542215 its reverse (51224554), we get a palindrome (96766769).

The spelling of 45542215 in words is "forty-five million, five hundred forty-two thousand, two hundred fifteen".