61553353 has 4 divisors (see below), whose sum is σ = 61663248. Its totient is φ = 61443460.

The previous prime is 61553347. The next prime is 61553377. The reversal of 61553353 is 35335516.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-61553353 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61553153) 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, 54103 + ... + 55228.

It is an arithmetic number, because the mean of its divisors is an integer number (15415812).

Almost surely, 2^61553353 is an apocalyptic number.

It is an amenable number.

61553353 is a deficient number, since it is larger than the sum of its proper divisors (109895).

61553353 is a wasteful number, since it uses less digits than its factorization.

61553353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109894.

The product of its digits is 20250, while the sum is 31.

The square root of 61553353 is about 7845.5944962762. The cubic root of 61553353 is about 394.8364499434.

Adding to 61553353 its reverse (35335516), we get a palindrome (96888869).

The spelling of 61553353 in words is "sixty-one million, five hundred fifty-three thousand, three hundred fifty-three".