90165151 has 4 divisors (see below), whose sum is σ = 90185872. Its totient is φ = 90144432.

The previous prime is 90165133. The next prime is 90165167. The reversal of 90165151 is 15156109.

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

It is a cyclic number.

It is not a de Polignac number, because 90165151 - 2⁹ = 90164639 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 (90165121) 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, 1035 + ... + 13468.

It is an arithmetic number, because the mean of its divisors is an integer number (22546468).

Almost surely, 2^90165151 is an apocalyptic number.

90165151 is a deficient number, since it is larger than the sum of its proper divisors (20721).

90165151 is a wasteful number, since it uses less digits than its factorization.

90165151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20720.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 90165151 is about 9495.5332130429. The cubic root of 90165151 is about 448.4144214090.

The spelling of 90165151 in words is "ninety million, one hundred sixty-five thousand, one hundred fifty-one".