90453215 has 4 divisors (see below), whose sum is σ = 108543864. Its totient is φ = 72362568.

The previous prime is 90453211. The next prime is 90453217. The reversal of 90453215 is 51235409.

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 90453215 - 2² = 90453211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90453211) 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, 9045317 + ... + 9045326.

It is an arithmetic number, because the mean of its divisors is an integer number (27135966).

Almost surely, 2^90453215 is an apocalyptic number.

90453215 is a deficient number, since it is larger than the sum of its proper divisors (18090649).

90453215 is a wasteful number, since it uses less digits than its factorization.

90453215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18090648.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 90453215 is about 9510.6895123330. The cubic root of 90453215 is about 448.8914524732.

The spelling of 90453215 in words is "ninety million, four hundred fifty-three thousand, two hundred fifteen".