53978011 has 2 divisors, whose sum is σ = 53978012. Its totient is φ = 53978010.

The previous prime is 53977997. The next prime is 53978021. The reversal of 53978011 is 11087935.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53978011 - 2⁷ = 53977883 is a prime.

It is a super-2 number, since 2×53978011² = 5827251343032242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53978021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26989005 + 26989006.

It is an arithmetic number, because the mean of its divisors is an integer number (26989006).

Almost surely, 2^53978011 is an apocalyptic number.

53978011 is a deficient number, since it is larger than the sum of its proper divisors (1).

53978011 is an equidigital number, since it uses as much as digits as its factorization.

53978011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 53978011 is about 7346.9729140647. The cubic root of 53978011 is about 377.9250035513.

The spelling of 53978011 in words is "fifty-three million, nine hundred seventy-eight thousand, eleven".