103287551 has 4 divisors (see below), whose sum is σ = 103308192. Its totient is φ = 103266912.

The previous prime is 103287533. The next prime is 103287571. The reversal of 103287551 is 155782301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155782301 = 607 ⋅256643.

It is a cyclic number.

It is not a de Polignac number, because 103287551 - 2¹⁴ = 103271167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103287571) 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, 2471 + ... + 14583.

It is an arithmetic number, because the mean of its divisors is an integer number (25827048).

Almost surely, 2^103287551 is an apocalyptic number.

103287551 is a deficient number, since it is larger than the sum of its proper divisors (20641).

103287551 is an equidigital number, since it uses as much as digits as its factorization.

103287551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20640.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 103287551 is about 10163.0483123913. The cubic root of 103287551 is about 469.1906260127.

The spelling of 103287551 in words is "one hundred three million, two hundred eighty-seven thousand, five hundred fifty-one".