90171652 has 6 divisors (see below), whose sum is σ = 157800398. Its totient is φ = 45085824.

The previous prime is 90171649. The next prime is 90171713. The reversal of 90171652 is 25617109.

It can be written as a sum of positive squares in only one way, i.e., 68956416 + 21215236 = 8304^2 + 4606^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11271453 + ... + 11271460.

Almost surely, 2^90171652 is an apocalyptic number.

It is an amenable number.

90171652 is a deficient number, since it is larger than the sum of its proper divisors (67628746).

90171652 is a wasteful number, since it uses less digits than its factorization.

90171652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22542917 (or 22542915 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 90171652 is about 9495.8755257217. The cubic root of 90171652 is about 448.4251981968.

The spelling of 90171652 in words is "ninety million, one hundred seventy-one thousand, six hundred fifty-two".