40561415 has 4 divisors (see below), whose sum is σ = 48673704. Its totient is φ = 32449128.

The previous prime is 40561403. The next prime is 40561471. The reversal of 40561415 is 51416504.

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

It is a cyclic number.

It is not a de Polignac number, because 40561415 - 2⁸ = 40561159 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4056137 + ... + 4056146.

It is an arithmetic number, because the mean of its divisors is an integer number (12168426).

Almost surely, 2^40561415 is an apocalyptic number.

40561415 is a deficient number, since it is larger than the sum of its proper divisors (8112289).

40561415 is an equidigital number, since it uses as much as digits as its factorization.

40561415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112288.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 40561415 is about 6368.7844209080. The cubic root of 40561415 is about 343.5877718253.

Adding to 40561415 its reverse (51416504), we get a palindrome (91977919).

The spelling of 40561415 in words is "forty million, five hundred sixty-one thousand, four hundred fifteen".