90561430 has 8 divisors (see below), whose sum is σ = 163010592. Its totient is φ = 36224568.

The previous prime is 90561407. The next prime is 90561437. The reversal of 90561430 is 3416509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90561437) 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, 4528062 + ... + 4528081.

It is an arithmetic number, because the mean of its divisors is an integer number (20376324).

Almost surely, 2^90561430 is an apocalyptic number.

90561430 is a deficient number, since it is larger than the sum of its proper divisors (72449162).

90561430 is a wasteful number, since it uses less digits than its factorization.

90561430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9056150.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 90561430 is about 9516.3769366288. The cubic root of 90561430 is about 449.0703937065.

Adding to 90561430 its reverse (3416509), we get a palindrome (93977939).

The spelling of 90561430 in words is "ninety million, five hundred sixty-one thousand, four hundred thirty".