10031557 has 2 divisors, whose sum is σ = 10031558. Its totient is φ = 10031556.

The previous prime is 10031533. The next prime is 10031579. The reversal of 10031557 is 75513001.

It is an a-pointer prime, because the next prime (10031579) can be obtained adding 10031557 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 2556801 = 2734^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031557 - 2¹⁹ = 9507269 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10032557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015778 + 5015779.

It is an arithmetic number, because the mean of its divisors is an integer number (5015779).

Almost surely, 2^10031557 is an apocalyptic number.

It is an amenable number.

10031557 is a deficient number, since it is larger than the sum of its proper divisors (1).

10031557 is an equidigital number, since it uses as much as digits as its factorization.

10031557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 10031557 is about 3167.2633297533. The cubic root of 10031557 is about 215.6698560185.

Adding to 10031557 its reverse (75513001), we get a palindrome (85544558).

The spelling of 10031557 in words is "ten million, thirty-one thousand, five hundred fifty-seven".