55335551 has 8 divisors (see below), whose sum is σ = 56830464. Its totient is φ = 53857440.

The previous prime is 55335547. The next prime is 55335557. The reversal of 55335551 is 15553355.

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 55335551 - 2² = 55335547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55335557) 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, 2621 + ... + 10841.

It is an arithmetic number, because the mean of its divisors is an integer number (7103808).

Almost surely, 2^55335551 is an apocalyptic number.

55335551 is a deficient number, since it is larger than the sum of its proper divisors (1494913).

55335551 is a wasteful number, since it uses less digits than its factorization.

55335551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401.

The product of its digits is 28125, while the sum is 32.

The square root of 55335551 is about 7438.7869306763. The cubic root of 55335551 is about 381.0670631439.

The spelling of 55335551 in words is "fifty-five million, three hundred thirty-five thousand, five hundred fifty-one".