61732553 has 4 divisors (see below), whose sum is σ = 61813188. Its totient is φ = 61651920.

The previous prime is 61732499. The next prime is 61732579. The reversal of 61732553 is 35523716.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32171584 + 29560969 = 5672^2 + 5437^2 .

It is a cyclic number.

It is not a de Polignac number, because 61732553 - 2¹⁴ = 61716169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61732453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39158 + ... + 40703.

It is an arithmetic number, because the mean of its divisors is an integer number (15453297).

Almost surely, 2^61732553 is an apocalyptic number.

It is an amenable number.

61732553 is a deficient number, since it is larger than the sum of its proper divisors (80635).

61732553 is an equidigital number, since it uses as much as digits as its factorization.

61732553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80634.

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

The square root of 61732553 is about 7857.0066182994. The cubic root of 61732553 is about 395.2192405720.

The spelling of 61732553 in words is "sixty-one million, seven hundred thirty-two thousand, five hundred fifty-three".