1401161255 has 24 divisors (see below), whose sum is σ = 1837814832. Its totient is φ = 1024967424.

The previous prime is 1401161243. The next prime is 1401161257. The reversal of 1401161255 is 5521611041.

It is not a de Polignac number, because 1401161255 - 2⁶ = 1401161191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401161257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82667 + ... + 98163.

It is an arithmetic number, because the mean of its divisors is an integer number (76575618).

Almost surely, 2^1401161255 is an apocalyptic number.

1401161255 is a deficient number, since it is larger than the sum of its proper divisors (436653577).

1401161255 is a wasteful number, since it uses less digits than its factorization.

1401161255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15635 (or 15622 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1401161255 is about 37432.0885738426. The cubic root of 1401161255 is about 1118.9981621077.

Adding to 1401161255 its reverse (5521611041), we get a palindrome (6922772296).

The spelling of 1401161255 in words is "one billion, four hundred one million, one hundred sixty-one thousand, two hundred fifty-five".