48991087 has 4 divisors (see below), whose sum is σ = 49173480. Its totient is φ = 48808696.

The previous prime is 48991057. The next prime is 48991097. The reversal of 48991087 is 78019984.

It is a happy number.

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 48991087 - 2¹⁵ = 48958319 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 (48991057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90793 + ... + 91330.

It is an arithmetic number, because the mean of its divisors is an integer number (12293370).

Almost surely, 2^48991087 is an apocalyptic number.

48991087 is a deficient number, since it is larger than the sum of its proper divisors (182393).

48991087 is a wasteful number, since it uses less digits than its factorization.

48991087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182392.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 48991087 is about 6999.3633281892. The cubic root of 48991087 is about 365.9083823155.

The spelling of 48991087 in words is "forty-eight million, nine hundred ninety-one thousand, eighty-seven".