557263 has 4 divisors (see below), whose sum is σ = 636880. Its totient is φ = 477648.

The previous prime is 557261. The next prime is 557269. The reversal of 557263 is 362755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362755 = 5 ⋅72551.

It is a cyclic number.

It is not a de Polignac number, because 557263 - 2¹ = 557261 is a prime.

It is the 747-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557261) by changing a digit.

It is a nontrivial repunit in base 746.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39798 + ... + 39811.

It is an arithmetic number, because the mean of its divisors is an integer number (159220).

2⁵⁵⁷²⁶³ is an apocalyptic number.

557263 is a deficient number, since it is larger than the sum of its proper divisors (79617).

557263 is an equidigital number, since it uses as much as digits as its factorization.

557263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79616.

The product of its digits is 6300, while the sum is 28.

The square root of 557263 is about 746.5005023441. The cubic root of 557263 is about 82.2912014145.

It can be divided in two parts, 557 and 263, that added together give a triangular number (820 = T₄₀).

The spelling of 557263 in words is "five hundred fifty-seven thousand, two hundred sixty-three".