4156481 has 4 divisors (see below), whose sum is σ = 4750272. Its totient is φ = 3562692.

The previous prime is 4156447. The next prime is 4156507. The reversal of 4156481 is 1846514.

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 not a de Polignac number, because 4156481 - 2⁶ = 4156417 is a prime.

It is a super-2 number, since 2×4156481² = 34552668606722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4156441) 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, 296885 + ... + 296898.

It is an arithmetic number, because the mean of its divisors is an integer number (1187568).

Almost surely, 2^4156481 is an apocalyptic number.

It is an amenable number.

4156481 is a deficient number, since it is larger than the sum of its proper divisors (593791).

4156481 is an equidigital number, since it uses as much as digits as its factorization.

4156481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593790.

The product of its digits is 3840, while the sum is 29.

The square root of 4156481 is about 2038.7449570753. The cubic root of 4156481 is about 160.7836684031.

The spelling of 4156481 in words is "four million, one hundred fifty-six thousand, four hundred eighty-one".