48371991 has 4 divisors (see below), whose sum is σ = 64495992. Its totient is φ = 32247992.

The previous prime is 48371951. The next prime is 48372017. The reversal of 48371991 is 19917384.

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 48371991 - 2¹⁵ = 48339223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48371951) 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, 8061996 + ... + 8062001.

It is an arithmetic number, because the mean of its divisors is an integer number (16123998).

Almost surely, 2^48371991 is an apocalyptic number.

48371991 is a deficient number, since it is larger than the sum of its proper divisors (16124001).

48371991 is a wasteful number, since it uses less digits than its factorization.

48371991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16124000.

The product of its digits is 54432, while the sum is 42.

The square root of 48371991 is about 6954.9975557149. The cubic root of 48371991 is about 364.3605266463.

The spelling of 48371991 in words is "forty-eight million, three hundred seventy-one thousand, nine hundred ninety-one".