55733661 has 6 divisors (see below), whose sum is σ = 80504190. Its totient is φ = 37155768.

The previous prime is 55733659. The next prime is 55733663. The reversal of 55733661 is 16633755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55733659) and next prime (55733663).

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 3980025 = 7194^2 + 1995^2 .

It is not a de Polignac number, because 55733661 - 2¹ = 55733659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55733663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3096306 + ... + 3096323.

It is an arithmetic number, because the mean of its divisors is an integer number (13417365).

Almost surely, 2^55733661 is an apocalyptic number.

It is an amenable number.

55733661 is a deficient number, since it is larger than the sum of its proper divisors (24770529).

55733661 is a wasteful number, since it uses less digits than its factorization.

55733661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192635 (or 6192632 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 55733661 is about 7465.4980409883. The cubic root of 55733661 is about 381.9787388914.

The spelling of 55733661 in words is "fifty-five million, seven hundred thirty-three thousand, six hundred sixty-one".