90078201 has 12 divisors (see below), whose sum is σ = 130913328. Its totient is φ = 59682744.

The previous prime is 90078199. The next prime is 90078211. The reversal of 90078201 is 10287009.

It is not a de Polignac number, because 90078201 - 2¹ = 90078199 is a prime.

It is a super-2 number, since 2×90078201² = 16228164590792802, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (90078211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29235 + ... + 32168.

It is an arithmetic number, because the mean of its divisors is an integer number (10909444).

Almost surely, 2^90078201 is an apocalyptic number.

It is an amenable number.

90078201 is a deficient number, since it is larger than the sum of its proper divisors (40835127).

90078201 is a wasteful number, since it uses less digits than its factorization.

90078201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61572 (or 61569 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 90078201 is about 9490.9536401776. The cubic root of 90078201 is about 448.2702335000.

The spelling of 90078201 in words is "ninety million, seventy-eight thousand, two hundred one".