40055497 has 4 divisors (see below), whose sum is σ = 41138116. Its totient is φ = 38972880.

The previous prime is 40055473. The next prime is 40055501. The reversal of 40055497 is 79455004.

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 18627856 + 21427641 = 4316^2 + 4629^2 .

It is a cyclic number.

It is not a de Polignac number, because 40055497 - 2⁷ = 40055369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40055437) 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, 541254 + ... + 541327.

It is an arithmetic number, because the mean of its divisors is an integer number (10284529).

Almost surely, 2^40055497 is an apocalyptic number.

It is an amenable number.

40055497 is a deficient number, since it is larger than the sum of its proper divisors (1082619).

40055497 is a wasteful number, since it uses less digits than its factorization.

40055497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082618.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 40055497 is about 6328.9412226691. The cubic root of 40055497 is about 342.1532804699.

The spelling of 40055497 in words is "forty million, fifty-five thousand, four hundred ninety-seven".