2550091 has 4 divisors (see below), whose sum is σ = 2632384. Its totient is φ = 2467800.

The previous prime is 2550089. The next prime is 2550101. The reversal of 2550091 is 1900552.

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 2550091 - 2¹ = 2550089 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2550001) 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, 41100 + ... + 41161.

It is an arithmetic number, because the mean of its divisors is an integer number (658096).

2^2550091 is an apocalyptic number.

2550091 is a deficient number, since it is larger than the sum of its proper divisors (82293).

2550091 is an equidigital number, since it uses as much as digits as its factorization.

2550091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82292.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2550091 is about 1596.9004352182. The cubic root of 2550091 is about 136.6213459350.

The spelling of 2550091 in words is "two million, five hundred fifty thousand, ninety-one".