55205151 has 4 divisors (see below), whose sum is σ = 73606872. Its totient is φ = 36803432.

The previous prime is 55205149. The next prime is 55205153. The reversal of 55205151 is 15150255.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (55205149) and next prime (55205153).

It is a cyclic number.

It is not a de Polignac number, because 55205151 - 2¹ = 55205149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9200856 + ... + 9200861.

It is an arithmetic number, because the mean of its divisors is an integer number (18401718).

Almost surely, 2^55205151 is an apocalyptic number.

55205151 is a deficient number, since it is larger than the sum of its proper divisors (18401721).

55205151 is a wasteful number, since it uses less digits than its factorization.

55205151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18401720.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 55205151 is about 7430.0168909633. The cubic root of 55205151 is about 380.7674954564.

The spelling of 55205151 in words is "fifty-five million, two hundred five thousand, one hundred fifty-one".