1251151 has 8 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 1125720.

The previous prime is 1251121. The next prime is 1251157. The reversal of 1251151 is 1511521.

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

It is a cyclic number.

It is not a de Polignac number, because 1251151 - 2¹³ = 1242959 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 (1251157) 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, 646 + ... + 1708.

It is an arithmetic number, because the mean of its divisors is an integer number (172368).

2^1251151 is an apocalyptic number.

1251151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1251151 is a deficient number, since it is larger than the sum of its proper divisors (127793).

1251151 is a wasteful number, since it uses less digits than its factorization.

1251151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181.

The product of its digits is 50, while the sum is 16.

The square root of 1251151 is about 1118.5486131590. The cubic root of 1251151 is about 107.7547877496.

Adding to 1251151 its reverse (1511521), we get a palindrome (2762672).

It can be divided in two parts, 1 and 251151, that added together give a palindrome (251152).

The spelling of 1251151 in words is "one million, two hundred fifty-one thousand, one hundred fifty-one".