102557471 has 4 divisors (see below), whose sum is σ = 102592200. Its totient is φ = 102522744.

The previous prime is 102557449. The next prime is 102557473. The reversal of 102557471 is 174755201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102557471 - 2²⁶ = 35448607 is a prime.

It is a super-3 number, since 3×102557471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102557473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12476 + ... + 18993.

It is an arithmetic number, because the mean of its divisors is an integer number (25648050).

Almost surely, 2^102557471 is an apocalyptic number.

102557471 is a deficient number, since it is larger than the sum of its proper divisors (34729).

102557471 is an equidigital number, since it uses as much as digits as its factorization.

102557471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34728.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 102557471 is about 10127.0662583001. The cubic root of 102557471 is about 468.0825319540.

The spelling of 102557471 in words is "one hundred two million, five hundred fifty-seven thousand, four hundred seventy-one".