102045557 has 2 divisors, whose sum is σ = 102045558. Its totient is φ = 102045556.

The previous prime is 102045547. The next prime is 102045589. The reversal of 102045557 is 755540201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53129521 + 48916036 = 7289^2 + 6994^2 .

It is a cyclic number.

It is not a de Polignac number, because 102045557 - 2⁸ = 102045301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102045527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51022778 + 51022779.

It is an arithmetic number, because the mean of its divisors is an integer number (51022779).

Almost surely, 2^102045557 is an apocalyptic number.

It is an amenable number.

102045557 is a deficient number, since it is larger than the sum of its proper divisors (1).

102045557 is an equidigital number, since it uses as much as digits as its factorization.

102045557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 102045557 is about 10101.7600941618. The cubic root of 102045557 is about 467.3024236845.

Adding to 102045557 its reverse (755540201), we get a palindrome (857585758).

The spelling of 102045557 in words is "one hundred two million, forty-five thousand, five hundred fifty-seven".