61309532 has 6 divisors (see below), whose sum is σ = 107291688. Its totient is φ = 30654764.

The previous prime is 61309487. The next prime is 61309543. The reversal of 61309532 is 23590316.

61309532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61309495 and 61309504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7663688 + ... + 7663695.

It is an arithmetic number, because the mean of its divisors is an integer number (17881948).

Almost surely, 2^61309532 is an apocalyptic number.

It is an amenable number.

61309532 is a deficient number, since it is larger than the sum of its proper divisors (45982156).

61309532 is a wasteful number, since it uses less digits than its factorization.

61309532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15327387 (or 15327385 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 61309532 is about 7830.0403574950. The cubic root of 61309532 is about 394.3144268756.

Adding to 61309532 its reverse (23590316), we get a palindrome (84899848).

The spelling of 61309532 in words is "sixty-one million, three hundred nine thousand, five hundred thirty-two".