4052921 has 2 divisors, whose sum is σ = 4052922. Its totient is φ = 4052920.

The previous prime is 4052911. The next prime is 4052927. The reversal of 4052921 is 1292504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2755600 + 1297321 = 1660^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 4052921 - 2¹⁴ = 4036537 is a prime.

It is not a weakly prime, because it can be changed into another prime (4052927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2026460 + 2026461.

It is an arithmetic number, because the mean of its divisors is an integer number (2026461).

Almost surely, 2^4052921 is an apocalyptic number.

It is an amenable number.

4052921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4052921 is an equidigital number, since it uses as much as digits as its factorization.

4052921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4052921 is about 2013.1867772266. The cubic root of 4052921 is about 159.4370974729.

The spelling of 4052921 in words is "four million, fifty-two thousand, nine hundred twenty-one".