45402500 has 120 divisors (see below), whose sum is σ = 117562368. Its totient is φ = 15120000.

The previous prime is 45402491. The next prime is 45402541. The reversal of 45402500 is 520454.

It is a happy number.

It is a super-2 number, since 2×45402500² = 4122774012500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 39 ways as a sum of consecutive naturals, for example, 357437 + ... + 357563.

Almost surely, 2^45402500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45402500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58781184).

45402500 is an abundant number, since it is smaller than the sum of its proper divisors (72159868).

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

45402500 is a wasteful number, since it uses less digits than its factorization.

45402500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 45402500 is about 6738.1377249207. The cubic root of 45402500 is about 356.7466654143.

Adding to 45402500 its reverse (520454), we get a palindrome (45922954).

The spelling of 45402500 in words is "forty-five million, four hundred two thousand, five hundred".