61532061 has 16 divisors (see below), whose sum is σ = 90647424. Its totient is φ = 36929024.

The previous prime is 61532059. The next prime is 61532087. The reversal of 61532061 is 16023516.

It is a cyclic number.

It is not a de Polignac number, because 61532061 - 2¹ = 61532059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61532041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25056 + ... + 27401.

It is an arithmetic number, because the mean of its divisors is an integer number (5665464).

Almost surely, 2^61532061 is an apocalyptic number.

It is an amenable number.

61532061 is a deficient number, since it is larger than the sum of its proper divisors (29115363).

61532061 is a wasteful number, since it uses less digits than its factorization.

61532061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52500.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61532061 is about 7844.2374390377. The cubic root of 61532061 is about 394.7909185639.

Adding to 61532061 its reverse (16023516), we get a palindrome (77555577).

The spelling of 61532061 in words is "sixty-one million, five hundred thirty-two thousand, sixty-one".