61533393 has 4 divisors (see below), whose sum is σ = 82044528. Its totient is φ = 41022260.

The previous prime is 61533391. The next prime is 61533427. The reversal of 61533393 is 39333516.

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 61533393 - 2¹ = 61533391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61533391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10255563 + ... + 10255568.

It is an arithmetic number, because the mean of its divisors is an integer number (20511132).

Almost surely, 2^61533393 is an apocalyptic number.

It is an amenable number.

61533393 is a deficient number, since it is larger than the sum of its proper divisors (20511135).

61533393 is a wasteful number, since it uses less digits than its factorization.

61533393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20511134.

The product of its digits is 21870, while the sum is 33.

The square root of 61533393 is about 7844.3223416685. The cubic root of 61533393 is about 394.7937672561.

The spelling of 61533393 in words is "sixty-one million, five hundred thirty-three thousand, three hundred ninety-three".