1055523 has 8 divisors (see below), whose sum is σ = 1608448. Its totient is φ = 603144.

The previous prime is 1055503. The next prime is 1055531. The reversal of 1055523 is 3255501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1055523 - 2⁸ = 1055267 is a prime.

It is a super-2 number, since 2×1055523² = 2228257607058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 50263 = 1055523 / (1 + 0 + 5 + 5 + 5 + 2 + 3).

It is a Duffinian number.

1055523 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055523.

It is not an unprimeable number, because it can be changed into a prime (1055503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25111 + ... + 25152.

It is an arithmetic number, because the mean of its divisors is an integer number (201056).

2^1055523 is an apocalyptic number.

1055523 is a deficient number, since it is larger than the sum of its proper divisors (552925).

1055523 is an equidigital number, since it uses as much as digits as its factorization.

1055523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50273.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 1055523 is about 1027.3864900805. The cubic root of 1055523 is about 101.8175322943.

The spelling of 1055523 in words is "one million, fifty-five thousand, five hundred twenty-three".