102252545 has 8 divisors (see below), whose sum is σ = 124082280. Its totient is φ = 80882560.

The previous prime is 102252541. The next prime is 102252551. The reversal of 102252545 is 545252201.

It is a Cunningham number, because it is equal to 10112²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 102252544 = 1^2 + 10112^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102252545 - 2² = 102252541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102252541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114446 + ... + 115335.

It is an arithmetic number, because the mean of its divisors is an integer number (15510285).

It is a Proth number, since it is equal to 6241 ⋅ 2¹⁴ + 1 and 6241 < 2¹⁴.

Almost surely, 2^102252545 is an apocalyptic number.

It is an amenable number.

102252545 is a deficient number, since it is larger than the sum of its proper divisors (21829735).

102252545 is an equidigital number, since it uses as much as digits as its factorization.

102252545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229875.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 102252545 is about 10112.0000494462. Note that the first 4 decimals coincide. The cubic root of 102252545 is about 467.6181671988.

The spelling of 102252545 in words is "one hundred two million, two hundred fifty-two thousand, five hundred forty-five".