1525823 has 4 divisors (see below), whose sum is σ = 1643208. Its totient is φ = 1408440.

The previous prime is 1525819. The next prime is 1525831. The reversal of 1525823 is 3285251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3285251 = 23 ⋅142837.

It is a cyclic number.

It is not a de Polignac number, because 1525823 - 2² = 1525819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1525792 and 1525801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525873) 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, 58673 + ... + 58698.

It is an arithmetic number, because the mean of its divisors is an integer number (410802).

2^1525823 is an apocalyptic number.

1525823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1525823 is a deficient number, since it is larger than the sum of its proper divisors (117385).

1525823 is a wasteful number, since it uses less digits than its factorization.

1525823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117384.

The product of its digits is 2400, while the sum is 26.

The square root of 1525823 is about 1235.2420815371. The cubic root of 1525823 is about 115.1245782924.

The spelling of 1525823 in words is "one million, five hundred twenty-five thousand, eight hundred twenty-three".