90551542 has 4 divisors (see below), whose sum is σ = 135827316. Its totient is φ = 45275770.

The previous prime is 90551521. The next prime is 90551551. The reversal of 90551542 is 24515509.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22637884 + ... + 22637887.

It is an arithmetic number, because the mean of its divisors is an integer number (33956829).

Almost surely, 2^90551542 is an apocalyptic number.

90551542 is a deficient number, since it is larger than the sum of its proper divisors (45275774).

90551542 is a wasteful number, since it uses less digits than its factorization.

90551542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45275773.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 90551542 is about 9515.8573969979. The cubic root of 90551542 is about 449.0540491116.

The spelling of 90551542 in words is "ninety million, five hundred fifty-one thousand, five hundred forty-two".