55642101 has 8 divisors (see below), whose sum is σ = 74231520. Its totient is φ = 37073712.

The previous prime is 55642099. The next prime is 55642109. The reversal of 55642101 is 10124655.

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

It is not a de Polignac number, because 55642101 - 2¹ = 55642099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55642109) 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, 2595 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (9278940).

Almost surely, 2^55642101 is an apocalyptic number.

It is an amenable number.

55642101 is a deficient number, since it is larger than the sum of its proper divisors (18589419).

55642101 is a wasteful number, since it uses less digits than its factorization.

55642101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515.

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

The square root of 55642101 is about 7459.3633106318. The cubic root of 55642101 is about 381.7694509907.

Adding to 55642101 its reverse (10124655), we get a palindrome (65766756).

The spelling of 55642101 in words is "fifty-five million, six hundred forty-two thousand, one hundred one".