102016551 has 32 divisors (see below), whose sum is σ = 169738240. Its totient is φ = 53063424.

The previous prime is 102016493. The next prime is 102016553. The reversal of 102016551 is 155610201.

It is not a de Polignac number, because 102016551 - 2⁹ = 102016039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102016553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17370 + ... + 22488.

It is an arithmetic number, because the mean of its divisors is an integer number (5304320).

Almost surely, 2^102016551 is an apocalyptic number.

102016551 is a deficient number, since it is larger than the sum of its proper divisors (67721689).

102016551 is a wasteful number, since it uses less digits than its factorization.

102016551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 102016551 is about 10100.3243017242. The cubic root of 102016551 is about 467.2581432703.

Adding to 102016551 its reverse (155610201), we get a palindrome (257626752).

It can be divided in two parts, 1020 and 16551, that added together give a palindrome (17571).

The spelling of 102016551 in words is "one hundred two million, sixteen thousand, five hundred fifty-one".