5402161 has 4 divisors (see below), whose sum is σ = 5411952. Its totient is φ = 5392372.

The previous prime is 5402147. The next prime is 5402179. The reversal of 5402161 is 1612045.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1612045 = 5 ⋅322409.

It is a cyclic number.

It is not a de Polignac number, because 5402161 - 2⁵ = 5402129 is a prime.

It is a Duffinian number.

5402161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5402561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4015 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (1352988).

Almost surely, 2^5402161 is an apocalyptic number.

It is an amenable number.

5402161 is a deficient number, since it is larger than the sum of its proper divisors (9791).

5402161 is an equidigital number, since it uses as much as digits as its factorization.

5402161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 5402161 is about 2324.2549343822. The cubic root of 5402161 is about 175.4644641432.

It can be divided in two parts, 540 and 2161, that added together give a triangular number (2701 = T₇₃).

The spelling of 5402161 in words is "five million, four hundred two thousand, one hundred sixty-one".