61553323 has 4 divisors (see below), whose sum is σ = 66288208. Its totient is φ = 56818440.

The previous prime is 61553291. The next prime is 61553329. The reversal of 61553323 is 32335516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61553323 - 2⁵ = 61553291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61553291 and 61553300.

It is not an unprimeable number, because it can be changed into a prime (61553329) 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, 2367423 + ... + 2367448.

It is an arithmetic number, because the mean of its divisors is an integer number (16572052).

Almost surely, 2^61553323 is an apocalyptic number.

61553323 is a deficient number, since it is larger than the sum of its proper divisors (4734885).

61553323 is a wasteful number, since it uses less digits than its factorization.

61553323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734884.

The product of its digits is 8100, while the sum is 28.

The square root of 61553323 is about 7845.5925843750. The cubic root of 61553323 is about 394.8363857980.

Adding to 61553323 its reverse (32335516), we get a palindrome (93888839).

The spelling of 61553323 in words is "sixty-one million, five hundred fifty-three thousand, three hundred twenty-three".