102151449 has 15 divisors (see below), whose sum is σ = 152732613. Its totient is φ = 68040324.

The previous prime is 102151411. The next prime is 102151451. The reversal of 102151449 is 944151201.

The square root of 102151449 is 10107.

It is a perfect power (a square), and thus also a powerful number.

102151449 is a `hidden beast` number, since 1 + 0 + 215 + 1 + 449 = 666.

It is not a de Polignac number, because 102151449 - 2¹³ = 102143257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102153449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 90402 + ... + 91524.

Almost surely, 2^102151449 is an apocalyptic number.

102151449 is the 10107-th square number.

102151449 is the 5054-th centered octagonal number.

It is an amenable number.

102151449 is a deficient number, since it is larger than the sum of its proper divisors (50581164).

102151449 is an frugal number, since it uses more digits than its factorization.

102151449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The cubic root of 102151449 is about 467.4640066849.

It can be divided in two parts, 10215 and 1449, that added together give a square (11664 = 108²).

The spelling of 102151449 in words is "one hundred two million, one hundred fifty-one thousand, four hundred forty-nine".