361111057 has 4 divisors (see below), whose sum is σ = 364686516. Its totient is φ = 357535600.

The previous prime is 361111013. The next prime is 361111111. The reversal of 361111057 is 750111163.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 315737361 + 45373696 = 17769^2 + 6736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361111057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361111657) 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, 1787578 + ... + 1787779.

It is an arithmetic number, because the mean of its divisors is an integer number (91171629).

Almost surely, 2^361111057 is an apocalyptic number.

It is an amenable number.

361111057 is a deficient number, since it is larger than the sum of its proper divisors (3575459).

361111057 is a wasteful number, since it uses less digits than its factorization.

361111057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575458.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 361111057 is about 19002.9223278947. The cubic root of 361111057 is about 712.1097447140.

The spelling of 361111057 in words is "three hundred sixty-one million, one hundred eleven thousand, fifty-seven".