90450259 has 4 divisors (see below), whose sum is σ = 90486000. Its totient is φ = 90414520.

The previous prime is 90450257. The next prime is 90450263. The reversal of 90450259 is 95205409.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90450259 - 2¹ = 90450257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90450253) 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, 13759 + ... + 19240.

It is an arithmetic number, because the mean of its divisors is an integer number (22621500).

Almost surely, 2^90450259 is an apocalyptic number.

90450259 is a deficient number, since it is larger than the sum of its proper divisors (35741).

90450259 is a wasteful number, since it uses less digits than its factorization.

90450259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35740.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 90450259 is about 9510.5341069784. The cubic root of 90450259 is about 448.8865625140.

It can be divided in two parts, 90450 and 259, that added together give a palindrome (90709).

The spelling of 90450259 in words is "ninety million, four hundred fifty thousand, two hundred fifty-nine".