45551015 has 4 divisors (see below), whose sum is σ = 54661224. Its totient is φ = 36440808.

The previous prime is 45550979. The next prime is 45551027. The reversal of 45551015 is 51015554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51015554 = 2 ⋅25507777.

It is a cyclic number.

It is not a de Polignac number, because 45551015 - 2²⁰ = 44502439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4555097 + ... + 4555106.

It is an arithmetic number, because the mean of its divisors is an integer number (13665306).

Almost surely, 2^45551015 is an apocalyptic number.

45551015 is a deficient number, since it is larger than the sum of its proper divisors (9110209).

45551015 is an equidigital number, since it uses as much as digits as its factorization.

45551015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110208.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 45551015 is about 6749.1492056407. The cubic root of 45551015 is about 357.1352237988.

Adding to 45551015 its reverse (51015554), we get a palindrome (96566569).

The spelling of 45551015 in words is "forty-five million, five hundred fifty-one thousand, fifteen".