55549953 has 6 divisors (see below), whose sum is σ = 80238834. Its totient is φ = 37033296.

The previous prime is 55549951. The next prime is 55549961. The reversal of 55549953 is 35994555.

55549953 is a `hidden beast` number, since 5 + 554 + 9 + 95 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47444544 + 8105409 = 6888^2 + 2847^2 .

It is not a de Polignac number, because 55549953 - 2¹ = 55549951 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55549899 and 55549908.

It is not an unprimeable number, because it can be changed into a prime (55549951) 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, 3086100 + ... + 3086117.

It is an arithmetic number, because the mean of its divisors is an integer number (13373139).

It is a Proth number, since it is equal to 6781 ⋅ 2¹³ + 1 and 6781 < 2¹³.

Almost surely, 2^55549953 is an apocalyptic number.

It is an amenable number.

55549953 is a deficient number, since it is larger than the sum of its proper divisors (24688881).

55549953 is a wasteful number, since it uses less digits than its factorization.

55549953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172223 (or 6172220 counting only the distinct ones).

The product of its digits is 607500, while the sum is 45.

The square root of 55549953 is about 7453.1840846715. The cubic root of 55549953 is about 381.5585871030.

The spelling of 55549953 in words is "fifty-five million, five hundred forty-nine thousand, nine hundred fifty-three".