4945121 has 2 divisors, whose sum is σ = 4945122. Its totient is φ = 4945120.

The previous prime is 4945103. The next prime is 4945123. The reversal of 4945121 is 1215494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 192721 = 2180^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 4945121 - 2²² = 750817 is a prime.

Together with 4945123, 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 (4945123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472560 + 2472561.

It is an arithmetic number, because the mean of its divisors is an integer number (2472561).

Almost surely, 2^4945121 is an apocalyptic number.

It is an amenable number.

4945121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945121 is an equidigital number, since it uses as much as digits as its factorization.

4945121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 4945121 is about 2223.7628020992. The cubic root of 4945121 is about 170.3696799448.

The spelling of 4945121 in words is "four million, nine hundred forty-five thousand, one hundred twenty-one".