61529 has 4 divisors (see below), whose sum is σ = 66276. Its totient is φ = 56784.

The previous prime is 61519. The next prime is 61543. The reversal of 61529 is 92516.

61529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10000 + 51529 = 100^2 + 227^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (61519) 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, 2354 + ... + 2379.

It is an arithmetic number, because the mean of its divisors is an integer number (16569).

2⁶¹⁵²⁹ is an apocalyptic number.

It is an amenable number.

61529 is a deficient number, since it is larger than the sum of its proper divisors (4747).

61529 is a wasteful number, since it uses less digits than its factorization.

61529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746.

The product of its digits is 540, while the sum is 23.

The square root of 61529 is about 248.0503981049. The cubic root of 61529 is about 39.4784371977.

The spelling of 61529 in words is "sixty-one thousand, five hundred twenty-nine".