45212115 has 32 divisors (see below), whose sum is σ = 82010880. Its totient is φ = 21085056.

The previous prime is 45212093. The next prime is 45212117. The reversal of 45212115 is 51121254.

It is not a de Polignac number, because 45212115 - 2⁶ = 45212051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45212091 and 45212100.

It is not an unprimeable number, because it can be changed into a prime (45212117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2397 + ... + 9806.

It is an arithmetic number, because the mean of its divisors is an integer number (2562840).

Almost surely, 2^45212115 is an apocalyptic number.

45212115 is a deficient number, since it is larger than the sum of its proper divisors (36798765).

45212115 is a wasteful number, since it uses less digits than its factorization.

45212115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12243.

The product of its digits is 400, while the sum is 21.

The square root of 45212115 is about 6723.9954640080. The cubic root of 45212115 is about 356.2473216173.

Adding to 45212115 its reverse (51121254), we get a palindrome (96333369).

The spelling of 45212115 in words is "forty-five million, two hundred twelve thousand, one hundred fifteen".