55413605 has 16 divisors (see below), whose sum is σ = 73550064. Its totient is φ = 39813120.

The previous prime is 55413599. The next prime is 55413607. The reversal of 55413605 is 50631455.

It can be written as a sum of positive squares in 8 ways, for example, as 2211169 + 53202436 = 1487^2 + 7294^2 .

It is not a de Polignac number, because 55413605 - 2¹⁸ = 55151461 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55413607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9116 + ... + 13925.

It is an arithmetic number, because the mean of its divisors is an integer number (4596879).

Almost surely, 2^55413605 is an apocalyptic number.

It is an amenable number.

55413605 is a deficient number, since it is larger than the sum of its proper divisors (18136459).

55413605 is a wasteful number, since it uses less digits than its factorization.

55413605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23096.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55413605 is about 7444.0315018141. The cubic root of 55413605 is about 381.2461513541.

The spelling of 55413605 in words is "fifty-five million, four hundred thirteen thousand, six hundred five".