55041621 has 8 divisors (see below), whose sum is σ = 74062560. Its totient is φ = 36357552.

The previous prime is 55041619. The next prime is 55041629. The reversal of 55041621 is 12614055.

55041621 = 2469² + 2470² + ... + 2477².

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

It is not a de Polignac number, because 55041621 - 2¹ = 55041619 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55041591 and 55041600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55041629) 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, 83835 + ... + 84488.

It is an arithmetic number, because the mean of its divisors is an integer number (9257820).

Almost surely, 2^55041621 is an apocalyptic number.

It is an amenable number.

55041621 is a deficient number, since it is larger than the sum of its proper divisors (19020939).

55041621 is a wasteful number, since it uses less digits than its factorization.

55041621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168435.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55041621 is about 7419.0040436706. The cubic root of 55041621 is about 380.3911507880.

Adding to 55041621 its reverse (12614055), we get a palindrome (67655676).

The spelling of 55041621 in words is "fifty-five million, forty-one thousand, six hundred twenty-one".