48517391 has 16 divisors (see below), whose sum is σ = 53893728. Its totient is φ = 43392000.

The previous prime is 48517369. The next prime is 48517409. The reversal of 48517391 is 19371584.

It is a cyclic number.

It is not a de Polignac number, because 48517391 - 2¹⁴ = 48501007 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 (48517321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120791 + ... + 121191.

It is an arithmetic number, because the mean of its divisors is an integer number (3368358).

Almost surely, 2^48517391 is an apocalyptic number.

48517391 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

48517391 is a deficient number, since it is larger than the sum of its proper divisors (5376337).

48517391 is a wasteful number, since it uses less digits than its factorization.

48517391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682.

The product of its digits is 30240, while the sum is 38.

The square root of 48517391 is about 6965.4426277158. The cubic root of 48517391 is about 364.7252351358.

The spelling of 48517391 in words is "forty-eight million, five hundred seventeen thousand, three hundred ninety-one".