61755533 has 6 divisors (see below), whose sum is σ = 71838126. Its totient is φ = 52933272.

The previous prime is 61755523. The next prime is 61755557. The reversal of 61755533 is 33555716.

61755533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 60808804 + 946729 = 7798^2 + 973^2 .

It is not a de Polignac number, because 61755533 - 2⁶ = 61755469 is a prime.

It is a super-2 number, since 2×61755533² = 7627491712228178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61755493 and 61755502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61755523) 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 5 ways as a sum of consecutive naturals, for example, 630110 + ... + 630207.

It is an arithmetic number, because the mean of its divisors is an integer number (11973021).

Almost surely, 2^61755533 is an apocalyptic number.

It is an amenable number.

61755533 is a deficient number, since it is larger than the sum of its proper divisors (10082593).

61755533 is a wasteful number, since it uses less digits than its factorization.

61755533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260331 (or 1260324 counting only the distinct ones).

The product of its digits is 47250, while the sum is 35.

The square root of 61755533 is about 7858.4688712242. The cubic root of 61755533 is about 395.2682747309.

The spelling of 61755533 in words is "sixty-one million, seven hundred fifty-five thousand, five hundred thirty-three".