40522500 has 90 divisors (see below), whose sum is σ = 128069942. Its totient is φ = 10800000.

The previous prime is 40522499. The next prime is 40522561. The reversal of 40522500 is 522504.

It can be written as a sum of positive squares in 5 ways, for example, as 24265476 + 16257024 = 4926^2 + 4032^2 .

It is a tau number, because it is divible by the number of its divisors (90).

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

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 21600 + ... + 23400.

Almost surely, 2^40522500 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 40522500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64034971).

40522500 is an abundant number, since it is smaller than the sum of its proper divisors (87547442).

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

40522500 is a wasteful number, since it uses less digits than its factorization.

40522500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831 (or 1811 counting only the distinct ones).

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

The square root of 40522500 is about 6365.7285521769. The cubic root of 40522500 is about 343.4778562284.

The spelling of 40522500 in words is "forty million, five hundred twenty-two thousand, five hundred".