55342251 has 16 divisors (see below), whose sum is σ = 83989920. Its totient is φ = 35994240.

The previous prime is 55342213. The next prime is 55342267. The reversal of 55342251 is 15224355.

It is a happy number.

It is not a de Polignac number, because 55342251 - 2¹⁷ = 55211179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55342271) 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, 23890 + ... + 26103.

It is an arithmetic number, because the mean of its divisors is an integer number (5249370).

Almost surely, 2^55342251 is an apocalyptic number.

55342251 is a deficient number, since it is larger than the sum of its proper divisors (28647669).

55342251 is a wasteful number, since it uses less digits than its factorization.

55342251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50043 (or 50037 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55342251 is about 7439.2372592894. The cubic root of 55342251 is about 381.0824423244.

The spelling of 55342251 in words is "fifty-five million, three hundred forty-two thousand, two hundred fifty-one".