48721905 has 40 divisors (see below), whose sum is σ = 88862400. Its totient is φ = 25532064.

The previous prime is 48721903. The next prime is 48721921. The reversal of 48721905 is 50912784.

It is not a de Polignac number, because 48721905 - 2¹ = 48721903 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 48721905.

It is not an unprimeable number, because it can be changed into a prime (48721903) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22876 + ... + 24914.

It is an arithmetic number, because the mean of its divisors is an integer number (2221560).

Almost surely, 2^48721905 is an apocalyptic number.

48721905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

48721905 is a deficient number, since it is larger than the sum of its proper divisors (40140495).

48721905 is a wasteful number, since it uses less digits than its factorization.

48721905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 48721905 is about 6980.1078071904. The cubic root of 48721905 is about 365.2369887720.

The spelling of 48721905 in words is "forty-eight million, seven hundred twenty-one thousand, nine hundred five".