40201481 has 4 divisors (see below), whose sum is σ = 42566292. Its totient is φ = 37836672.

The previous prime is 40201471. The next prime is 40201487. The reversal of 40201481 is 18410204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33825856 + 6375625 = 5816^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 40201481 - 2¹⁸ = 39939337 is a prime.

It is a super-2 number, since 2×40201481² = 3232318149186722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40201487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182380 + ... + 1182413.

It is an arithmetic number, because the mean of its divisors is an integer number (10641573).

Almost surely, 2^40201481 is an apocalyptic number.

It is an amenable number.

40201481 is a deficient number, since it is larger than the sum of its proper divisors (2364811).

40201481 is a wasteful number, since it uses less digits than its factorization.

40201481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364810.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 40201481 is about 6340.4637842984. The cubic root of 40201481 is about 342.5684406890.

Adding to 40201481 its reverse (18410204), we get a palindrome (58611685).

The spelling of 40201481 in words is "forty million, two hundred one thousand, four hundred eighty-one".