61493533 has 4 divisors (see below), whose sum is σ = 61598880. Its totient is φ = 61388188.

The previous prime is 61493503. The next prime is 61493561. The reversal of 61493533 is 33539416.

61493533 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61493533 - 2⁵ = 61493501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61493503) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 51793 + ... + 52966.

It is an arithmetic number, because the mean of its divisors is an integer number (15399720).

Almost surely, 2^61493533 is an apocalyptic number.

It is an amenable number.

61493533 is a deficient number, since it is larger than the sum of its proper divisors (105347).

61493533 is a wasteful number, since it uses less digits than its factorization.

61493533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105346.

The product of its digits is 29160, while the sum is 34.

The square root of 61493533 is about 7841.7812389788. The cubic root of 61493533 is about 394.7085025571.

It can be divided in two parts, 61493 and 533, that added together give a palindrome (62026).

The spelling of 61493533 in words is "sixty-one million, four hundred ninety-three thousand, five hundred thirty-three".