48531813 has 16 divisors (see below), whose sum is σ = 71295552. Its totient is φ = 29120000.

The previous prime is 48531811. The next prime is 48531829. The reversal of 48531813 is 31813584.

It is a cyclic number.

It is not a de Polignac number, because 48531813 - 2¹ = 48531811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48531811) 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, 3948 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (4455972).

Almost surely, 2^48531813 is an apocalyptic number.

It is an amenable number.

48531813 is a deficient number, since it is larger than the sum of its proper divisors (22763739).

48531813 is a wasteful number, since it uses less digits than its factorization.

48531813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14676.

The product of its digits is 11520, while the sum is 33.

The square root of 48531813 is about 6966.4778044576. The cubic root of 48531813 is about 364.7613702627.

It can be divided in two parts, 4853 and 1813, that added together give a palindrome (6666).

The spelling of 48531813 in words is "forty-eight million, five hundred thirty-one thousand, eight hundred thirteen".