40762561 has 6 divisors (see below), whose sum is σ = 47417730. Its totient is φ = 34939296.

The previous prime is 40762531. The next prime is 40762571. The reversal of 40762561 is 16526704.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24561936 + 16200625 = 4956^2 + 4025^2 .

It is not a de Polignac number, because 40762561 - 2¹¹ = 40760513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40762511) 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, 415896 + ... + 415993.

It is an arithmetic number, because the mean of its divisors is an integer number (7902955).

Almost surely, 2^40762561 is an apocalyptic number.

It is an amenable number.

40762561 is a deficient number, since it is larger than the sum of its proper divisors (6655169).

40762561 is an equidigital number, since it uses as much as digits as its factorization.

40762561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831903 (or 831896 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40762561 is about 6384.5564450477. The cubic root of 40762561 is about 344.1547916360.

The spelling of 40762561 in words is "forty million, seven hundred sixty-two thousand, five hundred sixty-one".