105072551 has 2 divisors, whose sum is σ = 105072552. Its totient is φ = 105072550.

The previous prime is 105072497. The next prime is 105072557. The reversal of 105072551 is 155270501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105072551 is a prime.

It is a super-2 number, since 2×105072551² = 22080481947295202, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 105072551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105072557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52536275 + 52536276.

It is an arithmetic number, because the mean of its divisors is an integer number (52536276).

Almost surely, 2^105072551 is an apocalyptic number.

105072551 is a deficient number, since it is larger than the sum of its proper divisors (1).

105072551 is an equidigital number, since it uses as much as digits as its factorization.

105072551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 105072551 is about 10250.4902809573. The cubic root of 105072551 is about 471.8780312423.

The spelling of 105072551 in words is "one hundred five million, seventy-two thousand, five hundred fifty-one".