102776049 has 6 divisors (see below), whose sum is σ = 148454306. Its totient is φ = 68517360.

The previous prime is 102776041. The next prime is 102776071. The reversal of 102776049 is 940677201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 98903025 + 3873024 = 9945^2 + 1968^2 .

It is not a de Polignac number, because 102776049 - 2³ = 102776041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102776041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5709772 + ... + 5709789.

Almost surely, 2^102776049 is an apocalyptic number.

It is an amenable number.

102776049 is a deficient number, since it is larger than the sum of its proper divisors (45678257).

102776049 is a wasteful number, since it uses less digits than its factorization.

102776049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11419567 (or 11419564 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 102776049 is about 10137.8522873437. The cubic root of 102776049 is about 468.4148332587.

The spelling of 102776049 in words is "one hundred two million, seven hundred seventy-six thousand, forty-nine".