45002520 has 64 divisors (see below), whose sum is σ = 150012000. Its totient is φ = 12000384.

The previous prime is 45002497. The next prime is 45002521. The reversal of 45002520 is 2520054.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 45002493 and 45002502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45002521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19755 + ... + 21914.

Almost surely, 2^45002520 is an apocalyptic number.

45002520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45002520 is an abundant number, since it is smaller than the sum of its proper divisors (105009480).

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

45002520 is a wasteful number, since it uses less digits than its factorization.

45002520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41689 (or 41679 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 45002520 is about 6708.3917595799. The cubic root of 45002520 is about 355.6959698592.

Adding to 45002520 its reverse (2520054), we get a palindrome (47522574).

The spelling of 45002520 in words is "forty-five million, two thousand, five hundred twenty".