127769051 has 4 divisors (see below), whose sum is σ = 127818600. Its totient is φ = 127719504.

The previous prime is 127769027. The next prime is 127769087. The reversal of 127769051 is 150967721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150967721 = 8731 ⋅17291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127769051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127768996 and 127769014.

It is not an unprimeable number, because it can be changed into a prime (127769651) 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, 20681 + ... + 26138.

It is an arithmetic number, because the mean of its divisors is an integer number (31954650).

Almost surely, 2^127769051 is an apocalyptic number.

127769051 is a deficient number, since it is larger than the sum of its proper divisors (49549).

127769051 is an equidigital number, since it uses as much as digits as its factorization.

127769051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49548.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 127769051 is about 11303.4972906619. The cubic root of 127769051 is about 503.6651359114.

The spelling of 127769051 in words is "one hundred twenty-seven million, seven hundred sixty-nine thousand, fifty-one".