1055135401 has 4 divisors (see below), whose sum is σ = 1083652612. Its totient is φ = 1026618192.

The previous prime is 1055135387. The next prime is 1055135429. The reversal of 1055135401 is 1045315501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1045315501 = 11329 ⋅92269.

It can be written as a sum of positive squares in 2 ways, for example, as 822542400 + 232593001 = 28680^2 + 15251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055135401 - 2⁷ = 1055135273 is a prime.

It is a super-2 number, since 2×1055135401² = 2226621428886861602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055135461) 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, 14258550 + ... + 14258623.

It is an arithmetic number, because the mean of its divisors is an integer number (270913153).

Almost surely, 2^1055135401 is an apocalyptic number.

It is an amenable number.

1055135401 is a deficient number, since it is larger than the sum of its proper divisors (28517211).

1055135401 is an equidigital number, since it uses as much as digits as its factorization.

1055135401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28517210.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1055135401 is about 32482.8477969528. The cubic root of 1055135401 is about 1018.0506795030.

The spelling of 1055135401 in words is "one billion, fifty-five million, one hundred thirty-five thousand, four hundred one".