102511145 has 8 divisors (see below), whose sum is σ = 134196480. Its totient is φ = 74553520.

The previous prime is 102511133. The next prime is 102511147. The reversal of 102511145 is 541115201.

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

It is not a de Polignac number, because 102511145 - 2¹⁴ = 102494761 is a prime.

It is a super-2 number, since 2×102511145² = 21017069698422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102511147) 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 7 ways as a sum of consecutive naturals, for example, 931865 + ... + 931974.

It is an arithmetic number, because the mean of its divisors is an integer number (16774560).

Almost surely, 2^102511145 is an apocalyptic number.

It is an amenable number.

102511145 is a deficient number, since it is larger than the sum of its proper divisors (31685335).

102511145 is a wasteful number, since it uses less digits than its factorization.

102511145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863855.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 102511145 is about 10124.7787630150. The cubic root of 102511145 is about 468.0120425104.

Adding to 102511145 its reverse (541115201), we get a palindrome (643626346).

The spelling of 102511145 in words is "one hundred two million, five hundred eleven thousand, one hundred forty-five".