48355981 has 8 divisors (see below), whose sum is σ = 50079384. Its totient is φ = 46662720.

The previous prime is 48355961. The next prime is 48355991. The reversal of 48355981 is 18955384.

It can be written as a sum of positive squares in 4 ways, for example, as 275625 + 48080356 = 525^2 + 6934^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 48355981 - 2⁵ = 48355949 is a prime.

It is a super-2 number, since 2×48355981² = 4676601796944722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48355921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4246 + ... + 10711.

It is an arithmetic number, because the mean of its divisors is an integer number (6259923).

Almost surely, 2^48355981 is an apocalyptic number.

It is an amenable number.

48355981 is a deficient number, since it is larger than the sum of its proper divisors (1723403).

48355981 is a wasteful number, since it uses less digits than its factorization.

48355981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15071.

The product of its digits is 172800, while the sum is 43.

The square root of 48355981 is about 6953.8464895337. The cubic root of 48355981 is about 364.3203239339.

It can be divided in two parts, 4835 and 5981, that added together give a square (10816 = 104²).

The spelling of 48355981 in words is "forty-eight million, three hundred fifty-five thousand, nine hundred eighty-one".