40521850 has 12 divisors (see below), whose sum is σ = 75370734. Its totient is φ = 16208720.

The previous prime is 40521827. The next prime is 40521853. The reversal of 40521850 is 5812504.

It can be written as a sum of positive squares in 3 ways, for example, as 27468081 + 13053769 = 5241^2 + 3613^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (40521853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 405169 + ... + 405268.

Almost surely, 2^40521850 is an apocalyptic number.

40521850 is a deficient number, since it is larger than the sum of its proper divisors (34848884).

40521850 is a wasteful number, since it uses less digits than its factorization.

40521850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810449 (or 810444 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 40521850 is about 6365.6774973289. The cubic root of 40521850 is about 343.4760197030.

The spelling of 40521850 in words is "forty million, five hundred twenty-one thousand, eight hundred fifty".