245542 has 8 divisors (see below), whose sum is σ = 401832. Its totient is φ = 111600.

The previous prime is 245533. The next prime is 245561.

245542 is nontrivially palindromic in base 10.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 11161 = 245542 / (2 + 4 + 5 + 5 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5559 + ... + 5602.

It is an arithmetic number, because the mean of its divisors is an integer number (50229).

2²⁴⁵⁵⁴² is an apocalyptic number.

245542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245542 is a deficient number, since it is larger than the sum of its proper divisors (156290).

245542 is a wasteful number, since it uses less digits than its factorization.

245542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11174.

The product of its digits is 1600, while the sum is 22.

The square root of 245542 is about 495.5219470417. The cubic root of 245542 is about 62.6193559215.

It can be divided in two parts, 245 and 542, that added together give a palindrome (787).

The spelling of 245542 in words is "two hundred forty-five thousand, five hundred forty-two".