19976057 has 2 divisors, whose sum is σ = 19976058. Its totient is φ = 19976056.

The previous prime is 19976053. The next prime is 19976069. The reversal of 19976057 is 75067991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 4096 = 4469^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 19976057 - 2² = 19976053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19975999 and 19976017.

It is not a weakly prime, because it can be changed into another prime (19976053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9988028 + 9988029.

It is an arithmetic number, because the mean of its divisors is an integer number (9988029).

Almost surely, 2^19976057 is an apocalyptic number.

It is an amenable number.

19976057 is a deficient number, since it is larger than the sum of its proper divisors (1).

19976057 is an equidigital number, since it uses as much as digits as its factorization.

19976057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 19976057 is about 4469.4582445751. The cubic root of 19976057 is about 271.3333995711. Note that the first 4 decimals are identical.

The spelling of 19976057 in words is "nineteen million, nine hundred seventy-six thousand, fifty-seven".