45251520 has 56 divisors (see below), whose sum is σ = 143676624. Its totient is φ = 12066816.

The previous prime is 45251519. The next prime is 45251533. The reversal of 45251520 is 2515254.

It is a happy number.

45251520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 22609 + ... + 24528.

It is an arithmetic number, because the mean of its divisors is an integer number (2565654).

Almost surely, 2^45251520 is an apocalyptic number.

45251520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45251520 is an abundant number, since it is smaller than the sum of its proper divisors (98425104).

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

45251520 is a wasteful number, since it uses less digits than its factorization.

45251520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47157 (or 47147 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 45251520 is about 6726.9250032983. The cubic root of 45251520 is about 356.3507883495.

Adding to 45251520 its reverse (2515254), we get a palindrome (47766774).

The spelling of 45251520 in words is "forty-five million, two hundred fifty-one thousand, five hundred twenty".