48391615 has 4 divisors (see below), whose sum is σ = 58069944. Its totient is φ = 38713288.

The previous prime is 48391601. The next prime is 48391619. The reversal of 48391615 is 51619384.

48391615 = 3109² + 3110² + ... + 3113².

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 48391615 - 2¹⁵ = 48358847 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 (48391619) 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, 4839157 + ... + 4839166.

It is an arithmetic number, because the mean of its divisors is an integer number (14517486).

Almost surely, 2^48391615 is an apocalyptic number.

48391615 is a deficient number, since it is larger than the sum of its proper divisors (9678329).

48391615 is an equidigital number, since it uses as much as digits as its factorization.

48391615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9678328.

The product of its digits is 25920, while the sum is 37.

The square root of 48391615 is about 6956.4081967636. The cubic root of 48391615 is about 364.4097923757.

The spelling of 48391615 in words is "forty-eight million, three hundred ninety-one thousand, six hundred fifteen".