102257477 has 16 divisors (see below), whose sum is σ = 121159680. Its totient is φ = 84485808.

The previous prime is 102257459. The next prime is 102257489. The reversal of 102257477 is 774752201.

It is a cyclic number.

It is not a de Polignac number, because 102257477 - 2¹² = 102253381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102257417) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19724 + ... + 24362.

It is an arithmetic number, because the mean of its divisors is an integer number (7572480).

Almost surely, 2^102257477 is an apocalyptic number.

It is an amenable number.

102257477 is a deficient number, since it is larger than the sum of its proper divisors (18902203).

102257477 is an equidigital number, since it uses as much as digits as its factorization.

102257477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 102257477 is about 10112.2439151753. The cubic root of 102257477 is about 467.6256853678.

The spelling of 102257477 in words is "one hundred two million, two hundred fifty-seven thousand, four hundred seventy-seven".