48890921 has 2 divisors, whose sum is σ = 48890922. Its totient is φ = 48890920.

The previous prime is 48890879. The next prime is 48890927. The reversal of 48890921 is 12909884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 3463321 = 6740^2 + 1861^2 .

It is a cyclic number.

It is not a de Polignac number, because 48890921 - 2¹⁸ = 48628777 is a prime.

It is a Chen prime.

It is a zygodrome in base 9.

It is not a weakly prime, because it can be changed into another prime (48890927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24445460 + 24445461.

It is an arithmetic number, because the mean of its divisors is an integer number (24445461).

Almost surely, 2^48890921 is an apocalyptic number.

It is an amenable number.

48890921 is a deficient number, since it is larger than the sum of its proper divisors (1).

48890921 is an equidigital number, since it uses as much as digits as its factorization.

48890921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 48890921 is about 6992.2043019351. The cubic root of 48890921 is about 365.6588363358.

The spelling of 48890921 in words is "forty-eight million, eight hundred ninety thousand, nine hundred twenty-one".