45021615 has 8 divisors (see below), whose sum is σ = 72034608. Its totient is φ = 24011520.

The previous prime is 45021589. The next prime is 45021617. The reversal of 45021615 is 51612054.

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

It is not a de Polignac number, because 45021615 - 2⁶ = 45021551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45021617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500706 + ... + 1500735.

It is an arithmetic number, because the mean of its divisors is an integer number (9004326).

Almost surely, 2^45021615 is an apocalyptic number.

45021615 is a deficient number, since it is larger than the sum of its proper divisors (27012993).

45021615 is a wasteful number, since it uses less digits than its factorization.

45021615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001449.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 45021615 is about 6709.8148260589. The cubic root of 45021615 is about 355.7462711470.

Adding to 45021615 its reverse (51612054), we get a palindrome (96633669).

The spelling of 45021615 in words is "forty-five million, twenty-one thousand, six hundred fifteen".