61327553 has 4 divisors (see below), whose sum is σ = 70088640. Its totient is φ = 52566468.

The previous prime is 61327529. The next prime is 61327559. The reversal of 61327553 is 35572316.

61327553 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 61327553 - 2⁸ = 61327297 is a prime.

It is a super-2 number, since 2×61327553² = 7522137513935618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61327559) 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, 4380533 + ... + 4380546.

It is an arithmetic number, because the mean of its divisors is an integer number (17522160).

Almost surely, 2^61327553 is an apocalyptic number.

It is an amenable number.

61327553 is a deficient number, since it is larger than the sum of its proper divisors (8761087).

61327553 is an equidigital number, since it uses as much as digits as its factorization.

61327553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761086.

The product of its digits is 18900, while the sum is 32.

The square root of 61327553 is about 7831.1910332976. The cubic root of 61327553 is about 394.3530573241.

Adding to 61327553 its reverse (35572316), we get a palindrome (96899869).

The spelling of 61327553 in words is "sixty-one million, three hundred twenty-seven thousand, five hundred fifty-three".