40561277 has 4 divisors (see below), whose sum is σ = 40593756. Its totient is φ = 40528800.

The previous prime is 40561273. The next prime is 40561289. The reversal of 40561277 is 77216504.

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 11195716 + 29365561 = 3346^2 + 5419^2 .

It is a cyclic number.

It is not a de Polignac number, because 40561277 - 2² = 40561273 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40561273) 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, 14288 + ... + 16889.

It is an arithmetic number, because the mean of its divisors is an integer number (10148439).

Almost surely, 2^40561277 is an apocalyptic number.

It is an amenable number.

40561277 is a deficient number, since it is larger than the sum of its proper divisors (32479).

40561277 is a wasteful number, since it uses less digits than its factorization.

40561277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32478.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 40561277 is about 6368.7735868062. The cubic root of 40561277 is about 343.5873821679.

The spelling of 40561277 in words is "forty million, five hundred sixty-one thousand, two hundred seventy-seven".