61533501 has 8 divisors (see below), whose sum is σ = 82112064. Its totient is φ = 40988640.

The previous prime is 61533467. The next prime is 61533503. The reversal of 61533501 is 10533516.

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

It is not a de Polignac number, because 61533501 - 2¹⁰ = 61532477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61533503) 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 7 ways as a sum of consecutive naturals, for example, 3801 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (10264008).

Almost surely, 2^61533501 is an apocalyptic number.

It is an amenable number.

61533501 is a deficient number, since it is larger than the sum of its proper divisors (20578563).

61533501 is a wasteful number, since it uses less digits than its factorization.

61533501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16851.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 61533501 is about 7844.3292256253. The cubic root of 61533501 is about 394.7939982294.

The spelling of 61533501 in words is "sixty-one million, five hundred thirty-three thousand, five hundred one".