90067545 has 20 divisors (see below), whose sum is σ = 161455140. Its totient is φ = 48035808.

The previous prime is 90067541. The next prime is 90067561. The reversal of 90067545 is 54576009.

It can be written as a sum of positive squares in 2 ways, for example, as 27910089 + 62157456 = 5283^2 + 7884^2 .

It is not a de Polignac number, because 90067545 - 2² = 90067541 is a prime.

It is a super-2 number, since 2×90067545² = 16224325324654050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90067541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 110790 + ... + 111599.

It is an arithmetic number, because the mean of its divisors is an integer number (8072757).

Almost surely, 2^90067545 is an apocalyptic number.

It is an amenable number.

90067545 is a deficient number, since it is larger than the sum of its proper divisors (71387595).

90067545 is a wasteful number, since it uses less digits than its factorization.

90067545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222406 (or 222397 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 90067545 is about 9490.3922468990. The cubic root of 90067545 is about 448.2525564300.

The spelling of 90067545 in words is "ninety million, sixty-seven thousand, five hundred forty-five".