45251240 has 32 divisors (see below), whose sum is σ = 103216680. Its totient is φ = 17851392.

The previous prime is 45251231. The next prime is 45251257. The reversal of 45251240 is 4215254.

It is a happy number.

45251240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 44542276 + 708964 = 6674^2 + 842^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4829 + ... + 10668.

Almost surely, 2^45251240 is an apocalyptic number.

45251240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45251240 is an abundant number, since it is smaller than the sum of its proper divisors (57965440).

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

45251240 is a wasteful number, since it uses less digits than its factorization.

45251240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15581 (or 15577 counting only the distinct ones).

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

The square root of 45251240 is about 6726.9041913796. The cubic root of 45251240 is about 356.3500533582.

Adding to 45251240 its reverse (4215254), we get a palindrome (49466494).

The spelling of 45251240 in words is "forty-five million, two hundred fifty-one thousand, two hundred forty".