40164261 has 4 divisors (see below), whose sum is σ = 53552352. Its totient is φ = 26776172.

The previous prime is 40164259. The next prime is 40164283. The reversal of 40164261 is 16246104.

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 a cyclic number.

It is not a de Polignac number, because 40164261 - 2¹ = 40164259 is a prime.

It is a super-2 number, since 2×40164261² = 3226335723352242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40164661) 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, 6694041 + ... + 6694046.

It is an arithmetic number, because the mean of its divisors is an integer number (13388088).

Almost surely, 2^40164261 is an apocalyptic number.

It is an amenable number.

40164261 is a deficient number, since it is larger than the sum of its proper divisors (13388091).

40164261 is a wasteful number, since it uses less digits than its factorization.

40164261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13388090.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 40164261 is about 6337.5279881039. The cubic root of 40164261 is about 342.4626872525.

The spelling of 40164261 in words is "forty million, one hundred sixty-four thousand, two hundred sixty-one".