291053 has 4 divisors (see below), whose sum is σ = 332640. Its totient is φ = 249468.

The previous prime is 291043. The next prime is 291077. The reversal of 291053 is 350192.

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 291053 - 2⁴ = 291037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (291013) 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, 20783 + ... + 20796.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2²⁹¹⁰⁵³ is an apocalyptic number.

It is an amenable number.

291053 is a deficient number, since it is larger than the sum of its proper divisors (41587).

291053 is an equidigital number, since it uses as much as digits as its factorization.

291053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41586.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 291053 is about 539.4932807737. The cubic root of 291053 is about 66.2710767163.

It can be divided in two parts, 2 and 91053, that multiplied together give a triangular number (182106 = T₆₀₃).

The spelling of 291053 in words is "two hundred ninety-one thousand, fifty-three".