101551005 has 12 divisors (see below), whose sum is σ = 176021820. Its totient is φ = 54160512.

The previous prime is 101550983. The next prime is 101551007. The reversal of 101551005 is 500155101.

It can be written as a sum of positive squares in 2 ways, for example, as 71014329 + 30536676 = 8427^2 + 5526^2 .

It is not a de Polignac number, because 101551005 - 2⁶ = 101550941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101551007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1128300 + ... + 1128389.

It is an arithmetic number, because the mean of its divisors is an integer number (14668485).

Almost surely, 2^101551005 is an apocalyptic number.

101551005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101551005 is a deficient number, since it is larger than the sum of its proper divisors (74470815).

101551005 is a wasteful number, since it uses less digits than its factorization.

101551005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256700 (or 2256697 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 101551005 is about 10077.2518575254. The cubic root of 101551005 is about 466.5462917982.

The spelling of 101551005 in words is "one hundred one million, five hundred fifty-one thousand, five".