10403557 has 2 divisors, whose sum is σ = 10403558. Its totient is φ = 10403556.

The previous prime is 10403539. The next prime is 10403573. The reversal of 10403557 is 75530401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7584516 + 2819041 = 2754^2 + 1679^2 .

It is an emirp because it is prime and its reverse (75530401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10403557 - 2¹⁹ = 9879269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10403537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201778 + 5201779.

It is an arithmetic number, because the mean of its divisors is an integer number (5201779).

Almost surely, 2^10403557 is an apocalyptic number.

It is an amenable number.

10403557 is a deficient number, since it is larger than the sum of its proper divisors (1).

10403557 is an equidigital number, since it uses as much as digits as its factorization.

10403557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 10403557 is about 3225.4545416112. The cubic root of 10403557 is about 218.3034589326.

Adding to 10403557 its reverse (75530401), we get a palindrome (85933958).

The spelling of 10403557 in words is "ten million, four hundred three thousand, five hundred fifty-seven".