217052150 has 96 divisors (see below), whose sum is σ = 490682880. Its totient is φ = 69822720.

The previous prime is 217052117. The next prime is 217052161. The reversal of 217052150 is 51250712.

It is a happy number.

It is a super-2 number, since 2×217052150² = 94223271639245000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 474722 + ... + 475178.

It is an arithmetic number, because the mean of its divisors is an integer number (5111280).

Almost surely, 2^217052150 is an apocalyptic number.

217052150 is an abundant number, since it is smaller than the sum of its proper divisors (273630730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217052150 is a wasteful number, since it uses less digits than its factorization.

217052150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 217052150 is about 14732.6898426594. The cubic root of 217052150 is about 600.9726354116.

The spelling of 217052150 in words is "two hundred seventeen million, fifty-two thousand, one hundred fifty".