165542255 has 16 divisors (see below), whose sum is σ = 206496864. Its totient is φ = 127290240.

The previous prime is 165542239. The next prime is 165542261. The reversal of 165542255 is 552245561.

It is not a de Polignac number, because 165542255 - 2⁴ = 165542239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9965 + ... + 20745.

It is an arithmetic number, because the mean of its divisors is an integer number (12906054).

Almost surely, 2^165542255 is an apocalyptic number.

165542255 is a deficient number, since it is larger than the sum of its proper divisors (40954609).

165542255 is a wasteful number, since it uses less digits than its factorization.

165542255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10906.

The product of its digits is 60000, while the sum is 35.

The square root of 165542255 is about 12866.3225126685. The cubic root of 165542255 is about 549.0808394092.

The spelling of 165542255 in words is "one hundred sixty-five million, five hundred forty-two thousand, two hundred fifty-five".