55342551 has 8 divisors (see below), whose sum is σ = 80498304. Its totient is φ = 33540920.

The previous prime is 55342549. The next prime is 55342559. The reversal of 55342551 is 15524355.

It is a happy number.

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 55342551 - 2¹ = 55342549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55342559) 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, 838491 + ... + 838556.

It is an arithmetic number, because the mean of its divisors is an integer number (10062288).

Almost surely, 2^55342551 is an apocalyptic number.

55342551 is a deficient number, since it is larger than the sum of its proper divisors (25155753).

55342551 is a wasteful number, since it uses less digits than its factorization.

55342551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677061.

The product of its digits is 15000, while the sum is 30.

The square root of 55342551 is about 7439.2574226195. The cubic root of 55342551 is about 381.0831309154.

The spelling of 55342551 in words is "fifty-five million, three hundred forty-two thousand, five hundred fifty-one".