48749861 has 4 divisors (see below), whose sum is σ = 49938924. Its totient is φ = 47560800.

The previous prime is 48749851. The next prime is 48749867. The reversal of 48749861 is 16894784.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11600836 + 37149025 = 3406^2 + 6095^2 .

It is a cyclic number.

It is not a de Polignac number, because 48749861 - 2²² = 44555557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48749867) 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, 594470 + ... + 594551.

It is an arithmetic number, because the mean of its divisors is an integer number (12484731).

Almost surely, 2^48749861 is an apocalyptic number.

48749861 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

48749861 is a deficient number, since it is larger than the sum of its proper divisors (1189063).

48749861 is a wasteful number, since it uses less digits than its factorization.

48749861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189062.

The product of its digits is 387072, while the sum is 47.

The square root of 48749861 is about 6982.1100678806. The cubic root of 48749861 is about 365.3068315049.

The spelling of 48749861 in words is "forty-eight million, seven hundred forty-nine thousand, eight hundred sixty-one".