253555100103 has 32 divisors (see below), whose sum is σ = 347002306560. Its totient is φ = 164638061280.

The previous prime is 253555100089. The next prime is 253555100143. The reversal of 253555100103 is 301001555352.

It is not a de Polignac number, because 253555100103 - 2¹⁰ = 253555099079 is a prime.

It is a super-2 number, since 2×253555100103² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253555100143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9178650 + ... + 9206232.

It is an arithmetic number, because the mean of its divisors is an integer number (10843822080).

Almost surely, 2^253555100103 is an apocalyptic number.

253555100103 is a deficient number, since it is larger than the sum of its proper divisors (93447206457).

253555100103 is a wasteful number, since it uses less digits than its factorization.

253555100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28179.

The product of its (nonzero) digits is 11250, while the sum is 30.

Adding to 253555100103 its reverse (301001555352), we get a palindrome (554556655455).

The spelling of 253555100103 in words is "two hundred fifty-three billion, five hundred fifty-five million, one hundred thousand, one hundred three".