2591401771 has 4 divisors (see below), whose sum is σ = 2961602032. Its totient is φ = 2221201512.

The previous prime is 2591401763. The next prime is 2591401777. The reversal of 2591401771 is 1771041952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2591401771 - 2³ = 2591401763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2591401771.

It is not an unprimeable number, because it can be changed into a prime (2591401777) 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, 185100120 + ... + 185100133.

It is an arithmetic number, because the mean of its divisors is an integer number (740400508).

Almost surely, 2^2591401771 is an apocalyptic number.

2591401771 is a deficient number, since it is larger than the sum of its proper divisors (370200261).

2591401771 is an equidigital number, since it uses as much as digits as its factorization.

2591401771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370200260.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 2591401771 is about 50905.8127427507. The cubic root of 2591401771 is about 1373.5514037265.

The spelling of 2591401771 in words is "two billion, five hundred ninety-one million, four hundred one thousand, seven hundred seventy-one".