1404161057 has 8 divisors (see below), whose sum is σ = 1521807336. Its totient is φ = 1287891072.

The previous prime is 1404161051. The next prime is 1404161081. The reversal of 1404161057 is 7501614041.

It can be written as a sum of positive squares in 4 ways, for example, as 120802081 + 1283358976 = 10991^2 + 35824^2 .

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

It is not a de Polignac number, because 1404161057 - 2⁸ = 1404160801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1404161051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341948 + ... + 346029.

It is an arithmetic number, because the mean of its divisors is an integer number (190225917).

Almost surely, 2^1404161057 is an apocalyptic number.

It is an amenable number.

1404161057 is a deficient number, since it is larger than the sum of its proper divisors (117646279).

1404161057 is a wasteful number, since it uses less digits than its factorization.

1404161057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688147.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1404161057 is about 37472.1370754325. The cubic root of 1404161057 is about 1119.7961621495.

Adding to 1404161057 its reverse (7501614041), we get a palindrome (8905775098).

The spelling of 1404161057 in words is "one billion, four hundred four million, one hundred sixty-one thousand, fifty-seven".