53128903 has 2 divisors, whose sum is σ = 53128904. Its totient is φ = 53128902.

The previous prime is 53128853. The next prime is 53128909. The reversal of 53128903 is 30982135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53128903 is a prime.

It is equal to p_3177283 and since 53128903 and 3177283 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53128909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26564451 + 26564452.

It is an arithmetic number, because the mean of its divisors is an integer number (26564452).

Almost surely, 2^53128903 is an apocalyptic number.

53128903 is a deficient number, since it is larger than the sum of its proper divisors (1).

53128903 is an equidigital number, since it uses as much as digits as its factorization.

53128903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 53128903 is about 7288.9576072303. The cubic root of 53128903 is about 375.9328549748.

The spelling of 53128903 in words is "fifty-three million, one hundred twenty-eight thousand, nine hundred three".