48100391 has 4 divisors (see below), whose sum is σ = 48888984. Its totient is φ = 47311800.

The previous prime is 48100387. The next prime is 48100397. The reversal of 48100391 is 19300184.

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 48100391 - 2² = 48100387 is a prime.

It is a super-3 number, since 3×48100391³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48100391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48100397) 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, 394205 + ... + 394326.

It is an arithmetic number, because the mean of its divisors is an integer number (12222246).

Almost surely, 2^48100391 is an apocalyptic number.

48100391 is a deficient number, since it is larger than the sum of its proper divisors (788593).

48100391 is an equidigital number, since it uses as much as digits as its factorization.

48100391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788592.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 48100391 is about 6935.4445423491. Note that the first 3 decimals coincide. The cubic root of 48100391 is about 363.6773067933.

The spelling of 48100391 in words is "forty-eight million, one hundred thousand, three hundred ninety-one".