4278061 has 4 divisors (see below), whose sum is σ = 4284000. Its totient is φ = 4272124.

The previous prime is 4278049. The next prime is 4278073. The reversal of 4278061 is 1608724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4278049) and next prime (4278073).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4278061 is a prime.

It is a Duffinian number.

4278061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (1071000).

Almost surely, 2^4278061 is an apocalyptic number.

It is an amenable number.

4278061 is a deficient number, since it is larger than the sum of its proper divisors (5939).

4278061 is an equidigital number, since it uses as much as digits as its factorization.

4278061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 4278061 is about 2068.3474079564. The cubic root of 4278061 is about 162.3363053743.

The spelling of 4278061 in words is "four million, two hundred seventy-eight thousand, sixty-one".