4901521 has 2 divisors, whose sum is σ = 4901522. Its totient is φ = 4901520.

The previous prime is 4901513. The next prime is 4901537. The reversal of 4901521 is 1251094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 1661521 = 1800^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 4901521 - 2³ = 4901513 is a prime.

It is a super-2 number, since 2×4901521² = 48049816226882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4901492 and 4901501.

It is not a weakly prime, because it can be changed into another prime (4901581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2450760 + 2450761.

It is an arithmetic number, because the mean of its divisors is an integer number (2450761).

Almost surely, 2^4901521 is an apocalyptic number.

It is an amenable number.

4901521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4901521 is an equidigital number, since it uses as much as digits as its factorization.

4901521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 4901521 is about 2213.9378943412. The cubic root of 4901521 is about 169.8674976739.

The spelling of 4901521 in words is "four million, nine hundred one thousand, five hundred twenty-one".