105502057 has 4 divisors (see below), whose sum is σ = 105553476. Its totient is φ = 105450640.

The previous prime is 105502043. The next prime is 105502093. The reversal of 105502057 is 750205501.

It is a happy number.

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 91183401 + 14318656 = 9549^2 + 3784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105502057 is a prime.

It is a super-3 number, since 3×105502057³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105502027) 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, 22498 + ... + 26779.

It is an arithmetic number, because the mean of its divisors is an integer number (26388369).

Almost surely, 2^105502057 is an apocalyptic number.

It is an amenable number.

105502057 is a deficient number, since it is larger than the sum of its proper divisors (51419).

105502057 is an equidigital number, since it uses as much as digits as its factorization.

105502057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51418.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 105502057 is about 10271.4194247923. The cubic root of 105502057 is about 472.5201238128.

Adding to 105502057 its reverse (750205501), we get a palindrome (855707558).

The spelling of 105502057 in words is "one hundred five million, five hundred two thousand, fifty-seven".