101010557 has 2 divisors, whose sum is σ = 101010558. Its totient is φ = 101010556.

The previous prime is 101010551. The next prime is 101010577. The reversal of 101010557 is 755010101.

It is an a-pointer prime, because the next prime (101010577) can be obtained adding 101010557 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79905721 + 21104836 = 8939^2 + 4594^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010557 - 2¹² = 101006461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101010551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505278 + 50505279.

It is an arithmetic number, because the mean of its divisors is an integer number (50505279).

Almost surely, 2^101010557 is an apocalyptic number.

It is an amenable number.

101010557 is a deficient number, since it is larger than the sum of its proper divisors (1).

101010557 is an equidigital number, since it uses as much as digits as its factorization.

101010557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 101010557 is about 10050.4008377776. The cubic root of 101010557 is about 465.7171759740.

Adding to 101010557 its reverse (755010101), we get a palindrome (856020658).

The spelling of 101010557 in words is "one hundred one million, ten thousand, five hundred fifty-seven".