45321215 has 8 divisors (see below), whose sum is σ = 54446688. Its totient is φ = 36216160.

The previous prime is 45321209. The next prime is 45321239. The reversal of 45321215 is 51212354.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45321215 - 2¹⁸ = 45059071 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 7 ways as a sum of consecutive naturals, for example, 305 + ... + 9525.

It is an arithmetic number, because the mean of its divisors is an integer number (6805836).

Almost surely, 2^45321215 is an apocalyptic number.

45321215 is a deficient number, since it is larger than the sum of its proper divisors (9125473).

45321215 is an equidigital number, since it uses as much as digits as its factorization.

45321215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10209.

The product of its digits is 1200, while the sum is 23.

The square root of 45321215 is about 6732.1033117444. The cubic root of 45321215 is about 356.5336413499.

Adding to 45321215 its reverse (51212354), we get a palindrome (96533569).

The spelling of 45321215 in words is "forty-five million, three hundred twenty-one thousand, two hundred fifteen".