45215624 has 8 divisors (see below), whose sum is σ = 84779310. Its totient is φ = 22607808.

The previous prime is 45215623. The next prime is 45215629. The reversal of 45215624 is 42651254.

It can be written as a sum of positive squares in only one way, i.e., 45131524 + 84100 = 6718^2 + 290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (45215623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825969 + ... + 2825984.

Almost surely, 2^45215624 is an apocalyptic number.

It is an amenable number.

45215624 is a deficient number, since it is larger than the sum of its proper divisors (39563686).

45215624 is a wasteful number, since it uses less digits than its factorization.

45215624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651959 (or 5651955 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 45215624 is about 6724.2563901148. The cubic root of 45215624 is about 356.2565377276.

Adding to 45215624 its reverse (42651254), we get a palindrome (87866878).

The spelling of 45215624 in words is "forty-five million, two hundred fifteen thousand, six hundred twenty-four".