2355591 has 16 divisors (see below), whose sum is σ = 3746304. Its totient is φ = 1287264.

The previous prime is 2355581. The next prime is 2355629. The reversal of 2355591 is 1955532.

It is not a de Polignac number, because 2355591 - 2⁵ = 2355559 is a prime.

It is a super-3 number, since 3×2355591³ = 39212173335605070213, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2355581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1956 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (234144).

2^2355591 is an apocalyptic number.

2355591 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2355591 is a deficient number, since it is larger than the sum of its proper divisors (1390713).

2355591 is a wasteful number, since it uses less digits than its factorization.

2355591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4910.

The product of its digits is 6750, while the sum is 30.

The square root of 2355591 is about 1534.7934714482. The cubic root of 2355591 is about 133.0556421976.

The spelling of 2355591 in words is "two million, three hundred fifty-five thousand, five hundred ninety-one".