55262621 has 8 divisors (see below), whose sum is σ = 58258080. Its totient is φ = 52275888.

The previous prime is 55262617. The next prime is 55262651. The reversal of 55262621 is 12626255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55262621 - 2² = 55262617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55262651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13955 + ... + 17471.

It is an arithmetic number, because the mean of its divisors is an integer number (7282260).

Almost surely, 2^55262621 is an apocalyptic number.

It is an amenable number.

55262621 is a deficient number, since it is larger than the sum of its proper divisors (2995459).

55262621 is a wasteful number, since it uses less digits than its factorization.

55262621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363.

The product of its digits is 7200, while the sum is 29.

The square root of 55262621 is about 7433.8833055140. The cubic root of 55262621 is about 380.8995792594.

Adding to 55262621 its reverse (12626255), we get a palindrome (67888876).

The spelling of 55262621 in words is "fifty-five million, two hundred sixty-two thousand, six hundred twenty-one".