102557445 has 16 divisors (see below), whose sum is σ = 165196800. Its totient is φ = 54329024.

The previous prime is 102557423. The next prime is 102557449. The reversal of 102557445 is 544755201.

It is a cyclic number.

It is not a de Polignac number, because 102557445 - 2⁷ = 102557317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102557449) 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 in 15 ways as a sum of consecutive naturals, for example, 20709 + ... + 25178.

It is an arithmetic number, because the mean of its divisors is an integer number (10324800).

Almost surely, 2^102557445 is an apocalyptic number.

102557445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102557445 is a deficient number, since it is larger than the sum of its proper divisors (62639355).

102557445 is a wasteful number, since it uses less digits than its factorization.

102557445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46044.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 102557445 is about 10127.0649746114. The cubic root of 102557445 is about 468.0824923984.

The spelling of 102557445 in words is "one hundred two million, five hundred fifty-seven thousand, four hundred forty-five".