102257045 has 32 divisors (see below), whose sum is σ = 140883840. Its totient is φ = 70560000.

The previous prime is 102257039. The next prime is 102257081. The reversal of 102257045 is 540752201.

It is not a de Polignac number, because 102257045 - 2¹² = 102252949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96770 + ... + 97820.

It is an arithmetic number, because the mean of its divisors is an integer number (4402620).

Almost surely, 2^102257045 is an apocalyptic number.

It is an amenable number.

102257045 is a deficient number, since it is larger than the sum of its proper divisors (38626795).

102257045 is a wasteful number, since it uses less digits than its factorization.

102257045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 102257045 is about 10112.2225549085. Note that the first 3 decimals coincide. The cubic root of 102257045 is about 467.6250268517.

The spelling of 102257045 in words is "one hundred two million, two hundred fifty-seven thousand, forty-five".