48990521 has 2 divisors, whose sum is σ = 48990522. Its totient is φ = 48990520.

The previous prime is 48990517. The next prime is 48990523. The reversal of 48990521 is 12509984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48846121 + 144400 = 6989^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 48990521 - 2² = 48990517 is a prime.

It is a super-2 number, since 2×48990521² = 4800142295702882, which contains 22 as substring.

Together with 48990523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (48990523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24495260 + 24495261.

It is an arithmetic number, because the mean of its divisors is an integer number (24495261).

Almost surely, 2^48990521 is an apocalyptic number.

It is an amenable number.

48990521 is a deficient number, since it is larger than the sum of its proper divisors (1).

48990521 is an equidigital number, since it uses as much as digits as its factorization.

48990521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 48990521 is about 6999.3228958236. The cubic root of 48990521 is about 365.9069731821.

The spelling of 48990521 in words is "forty-eight million, nine hundred ninety thousand, five hundred twenty-one".