53403557 has 2 divisors, whose sum is σ = 53403558. Its totient is φ = 53403556.

The previous prime is 53403551. The next prime is 53403563. The reversal of 53403557 is 75530435.

It is a balanced prime because it is at equal distance from previous prime (53403551) and next prime (53403563).

It can be written as a sum of positive squares in only one way, i.e., 53377636 + 25921 = 7306^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 53403557 - 2¹⁰ = 53402533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53403551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26701778 + 26701779.

It is an arithmetic number, because the mean of its divisors is an integer number (26701779).

Almost surely, 2^53403557 is an apocalyptic number.

It is an amenable number.

53403557 is a deficient number, since it is larger than the sum of its proper divisors (1).

53403557 is an equidigital number, since it uses as much as digits as its factorization.

53403557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 53403557 is about 7307.7737376030. The cubic root of 53403557 is about 376.5795465972.

The spelling of 53403557 in words is "fifty-three million, four hundred three thousand, five hundred fifty-seven".