48933781 has 8 divisors (see below), whose sum is σ = 53012120. Its totient is φ = 45167616.

The previous prime is 48933761. The next prime is 48933791. The reversal of 48933781 is 18733984.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32604100 + 16329681 = 5710^2 + 4041^2 .

It is not a de Polignac number, because 48933781 - 2⁵ = 48933749 is a prime.

It is a super-2 number, since 2×48933781² = 4789029845911922, 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 (48933751) 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, 8940 + ... + 13333.

It is an arithmetic number, because the mean of its divisors is an integer number (6626515).

Almost surely, 2^48933781 is an apocalyptic number.

It is an amenable number.

48933781 is a deficient number, since it is larger than the sum of its proper divisors (4078339).

48933781 is an equidigital number, since it uses as much as digits as its factorization.

48933781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22312 (or 22286 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 48933781 is about 6995.2684723319. The cubic root of 48933781 is about 365.7656561706.

The spelling of 48933781 in words is "forty-eight million, nine hundred thirty-three thousand, seven hundred eighty-one".