61533916 has 6 divisors (see below), whose sum is σ = 107684360. Its totient is φ = 30766956.

The previous prime is 61533889. The next prime is 61533919. The reversal of 61533916 is 61933516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61533919) 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 as a sum of consecutive naturals, namely, 7691736 + ... + 7691743.

Almost surely, 2^61533916 is an apocalyptic number.

It is an amenable number.

61533916 is a deficient number, since it is larger than the sum of its proper divisors (46150444).

61533916 is a wasteful number, since it uses less digits than its factorization.

61533916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15383483 (or 15383481 counting only the distinct ones).

The product of its digits is 14580, while the sum is 34.

The square root of 61533916 is about 7844.3556778106. The cubic root of 61533916 is about 394.7948857629.

The spelling of 61533916 in words is "sixty-one million, five hundred thirty-three thousand, nine hundred sixteen".