4921145 has 8 divisors (see below), whose sum is σ = 5918280. Its totient is φ = 3928320.

The previous prime is 4921139. The next prime is 4921151. The reversal of 4921145 is 5411294.

It is an interprime number because it is at equal distance from previous prime (4921139) and next prime (4921151).

It can be written as a sum of positive squares in 4 ways, for example, as 506944 + 4414201 = 712^2 + 2101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4921145 - 2⁴ = 4921129 is a prime.

It is a super-2 number, since 2×4921145² = 48435336222050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2561 + ... + 4049.

It is an arithmetic number, because the mean of its divisors is an integer number (739785).

Almost surely, 2^4921145 is an apocalyptic number.

It is an amenable number.

4921145 is a deficient number, since it is larger than the sum of its proper divisors (997135).

4921145 is a wasteful number, since it uses less digits than its factorization.

4921145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

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

The square root of 4921145 is about 2218.3653891999. The cubic root of 4921145 is about 170.0938927692.

The spelling of 4921145 in words is "four million, nine hundred twenty-one thousand, one hundred forty-five".