61453 has 4 divisors (see below), whose sum is σ = 70240. Its totient is φ = 52668.

The previous prime is 61441. The next prime is 61463. The reversal of 61453 is 35416.

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 de Polignac number, because none of the positive numbers 2^k-61453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4383 + ... + 4396.

It is an arithmetic number, because the mean of its divisors is an integer number (17560).

2⁶¹⁴⁵³ is an apocalyptic number.

It is an amenable number.

61453 is a deficient number, since it is larger than the sum of its proper divisors (8787).

61453 is an equidigital number, since it uses as much as digits as its factorization.

61453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8786.

The product of its digits is 360, while the sum is 19.

The square root of 61453 is about 247.8971560950. The cubic root of 61453 is about 39.4621760448.

Adding to 61453 its reverse (35416), we get a palindrome (96869).

The spelling of 61453 in words is "sixty-one thousand, four hundred fifty-three".