49953821 has 4 divisors (see below), whose sum is σ = 49968444. Its totient is φ = 49939200.

The previous prime is 49953817. The next prime is 49953823. The reversal of 49953821 is 12835994.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 34351321 + 15602500 = 5861^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 49953821 - 2² = 49953817 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 (49953823) 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, 851 + ... + 10031.

It is an arithmetic number, because the mean of its divisors is an integer number (12492111).

Almost surely, 2^49953821 is an apocalyptic number.

It is an amenable number.

49953821 is a deficient number, since it is larger than the sum of its proper divisors (14623).

49953821 is an equidigital number, since it uses as much as digits as its factorization.

49953821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14622.

The product of its digits is 77760, while the sum is 41.

The square root of 49953821 is about 7067.8017091596. The cubic root of 49953821 is about 368.2896983360.

The spelling of 49953821 in words is "forty-nine million, nine hundred fifty-three thousand, eight hundred twenty-one".