61324553 has 2 divisors, whose sum is σ = 61324554. Its totient is φ = 61324552.

The previous prime is 61324547. The next prime is 61324567. The reversal of 61324553 is 35542316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44448889 + 16875664 = 6667^2 + 4108^2 .

It is a cyclic number.

It is not a de Polignac number, because 61324553 - 2⁸ = 61324297 is a prime.

It is not a weakly prime, because it can be changed into another prime (61326553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30662276 + 30662277.

It is an arithmetic number, because the mean of its divisors is an integer number (30662277).

Almost surely, 2^61324553 is an apocalyptic number.

It is an amenable number.

61324553 is a deficient number, since it is larger than the sum of its proper divisors (1).

61324553 is an equidigital number, since it uses as much as digits as its factorization.

61324553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 61324553 is about 7830.9994892095. Note that the first 3 decimals coincide. The cubic root of 61324553 is about 394.3466269439.

Adding to 61324553 its reverse (35542316), we get a palindrome (96866869).

The spelling of 61324553 in words is "sixty-one million, three hundred twenty-four thousand, five hundred fifty-three".