48087821 has 2 divisors, whose sum is σ = 48087822. Its totient is φ = 48087820.

The previous prime is 48087799. The next prime is 48087839. The reversal of 48087821 is 12878084.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36602500 + 11485321 = 6050^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 48087821 - 2²² = 43893517 is a prime.

It is a super-3 number, since 3×48087821³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48087881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24043910 + 24043911.

It is an arithmetic number, because the mean of its divisors is an integer number (24043911).

Almost surely, 2^48087821 is an apocalyptic number.

It is an amenable number.

48087821 is a deficient number, since it is larger than the sum of its proper divisors (1).

48087821 is an equidigital number, since it uses as much as digits as its factorization.

48087821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 48087821 is about 6934.5382686953. The cubic root of 48087821 is about 363.6456242926.

The spelling of 48087821 in words is "forty-eight million, eighty-seven thousand, eight hundred twenty-one".