45242520 has 32 divisors (see below), whose sum is σ = 135727920. Its totient is φ = 12064640.

The previous prime is 45242507. The next prime is 45242531. The reversal of 45242520 is 2524254.

It is a happy number.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188391 + ... + 188630.

Almost surely, 2^45242520 is an apocalyptic number.

45242520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45242520 is an abundant number, since it is smaller than the sum of its proper divisors (90485400).

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

45242520 is a wasteful number, since it uses less digits than its factorization.

45242520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377035 (or 377031 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 45242520 is about 6726.2560165370. The cubic root of 45242520 is about 356.3271621101.

Adding to 45242520 its reverse (2524254), we get a palindrome (47766774).

The spelling of 45242520 in words is "forty-five million, two hundred forty-two thousand, five hundred twenty".