40527561 has 4 divisors (see below), whose sum is σ = 54036752. Its totient is φ = 27018372.

The previous prime is 40527547. The next prime is 40527637. The reversal of 40527561 is 16572504.

40527561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40527561 - 2⁶ = 40527497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40527961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6754591 + ... + 6754596.

It is an arithmetic number, because the mean of its divisors is an integer number (13509188).

Almost surely, 2^40527561 is an apocalyptic number.

It is an amenable number.

40527561 is a deficient number, since it is larger than the sum of its proper divisors (13509191).

40527561 is a wasteful number, since it uses less digits than its factorization.

40527561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13509190.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 40527561 is about 6366.1260590723. The cubic root of 40527561 is about 343.4921550259.

It can be divided in two parts, 405 and 27561, that added together give a triangular number (27966 = T₂₃₆).

The spelling of 40527561 in words is "forty million, five hundred twenty-seven thousand, five hundred sixty-one".