290172103 has 4 divisors (see below), whose sum is σ = 312493048. Its totient is φ = 267851160.

The previous prime is 290172079. The next prime is 290172107. The reversal of 290172103 is 301271092.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290172103 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 (290172107) 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, 11160453 + ... + 11160478.

It is an arithmetic number, because the mean of its divisors is an integer number (78123262).

Almost surely, 2^290172103 is an apocalyptic number.

290172103 is a deficient number, since it is larger than the sum of its proper divisors (22320945).

290172103 is a wasteful number, since it uses less digits than its factorization.

290172103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22320944.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 290172103 is about 17034.4387345166. The cubic root of 290172103 is about 662.0415077584.

The spelling of 290172103 in words is "two hundred ninety million, one hundred seventy-two thousand, one hundred three".