40261481 has 16 divisors (see below), whose sum is σ = 44352000. Its totient is φ = 36324288.

The previous prime is 40261453. The next prime is 40261531. The reversal of 40261481 is 18416204.

It is not a de Polignac number, because 40261481 - 2¹⁰ = 40260457 is a prime.

It is a super-2 number, since 2×40261481² = 3241973704626722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40261481.

It is not an unprimeable number, because it can be changed into a prime (40261411) 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, 202220 + ... + 202418.

It is an arithmetic number, because the mean of its divisors is an integer number (2772000).

Almost surely, 2^40261481 is an apocalyptic number.

It is an amenable number.

40261481 is a deficient number, since it is larger than the sum of its proper divisors (4090519).

40261481 is a wasteful number, since it uses less digits than its factorization.

40261481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 40261481 is about 6345.1935352675. The cubic root of 40261481 is about 342.7387817549.

Adding to 40261481 its reverse (18416204), we get a palindrome (58677685).

The spelling of 40261481 in words is "forty million, two hundred sixty-one thousand, four hundred eighty-one".