45152420 has 24 divisors (see below), whose sum is σ = 98091000. Its totient is φ = 17437952.

The previous prime is 45152407. The next prime is 45152423. The reversal of 45152420 is 2425154.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 850084 + 44302336 = 922^2 + 6656^2 .

It is not an unprimeable number, because it can be changed into a prime (45152423) 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, 38345 + ... + 39504.

It is an arithmetic number, because the mean of its divisors is an integer number (4087125).

Almost surely, 2^45152420 is an apocalyptic number.

It is an amenable number.

45152420 is an abundant number, since it is smaller than the sum of its proper divisors (52938580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45152420 is a wasteful number, since it uses less digits than its factorization.

45152420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77887 (or 77885 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 45152420 is about 6719.5550447928. Note that the first 3 decimals coincide. The cubic root of 45152420 is about 356.0904643221.

Adding to 45152420 its reverse (2425154), we get a palindrome (47577574).

The spelling of 45152420 in words is "forty-five million, one hundred fifty-two thousand, four hundred twenty".