48778517 has 4 divisors (see below), whose sum is σ = 48793536. Its totient is φ = 48763500.

The previous prime is 48778507. The next prime is 48778523. The reversal of 48778517 is 71587784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48778517 - 2⁴ = 48778501 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 (48778507) 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, 383 + ... + 9884.

It is an arithmetic number, because the mean of its divisors is an integer number (12198384).

Almost surely, 2^48778517 is an apocalyptic number.

It is an amenable number.

48778517 is a deficient number, since it is larger than the sum of its proper divisors (15019).

48778517 is a wasteful number, since it uses less digits than its factorization.

48778517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15018.

The product of its digits is 439040, while the sum is 47.

The square root of 48778517 is about 6984.1618681127. The cubic root of 48778517 is about 365.3783953472.

The spelling of 48778517 in words is "forty-eight million, seven hundred seventy-eight thousand, five hundred seventeen".