127643051 has 4 divisors (see below), whose sum is σ = 127671504. Its totient is φ = 127614600.

The previous prime is 127643039. The next prime is 127643057. The reversal of 127643051 is 150346721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127643051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127643057) 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, 5855 + ... + 17016.

It is an arithmetic number, because the mean of its divisors is an integer number (31917876).

Almost surely, 2^127643051 is an apocalyptic number.

127643051 is a deficient number, since it is larger than the sum of its proper divisors (28453).

127643051 is an equidigital number, since it uses as much as digits as its factorization.

127643051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28452.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 127643051 is about 11297.9224196310. The cubic root of 127643051 is about 503.4995176100.

Adding to 127643051 its reverse (150346721), we get a palindrome (277989772).

The spelling of 127643051 in words is "one hundred twenty-seven million, six hundred forty-three thousand, fifty-one".