1151015 has 4 divisors (see below), whose sum is σ = 1381224. Its totient is φ = 920808.

The previous prime is 1150987. The next prime is 1151021. The reversal of 1151015 is 5101511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1151015 - 2¹⁰ = 1149991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115097 + ... + 115106.

It is an arithmetic number, because the mean of its divisors is an integer number (345306).

2^1151015 is an apocalyptic number.

1151015 is a deficient number, since it is larger than the sum of its proper divisors (230209).

1151015 is an equidigital number, since it uses as much as digits as its factorization.

1151015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230208.

The product of its (nonzero) digits is 25, while the sum is 14.

The square root of 1151015 is about 1072.8536712898. The cubic root of 1151015 is about 104.7997695836.

Adding to 1151015 its reverse (5101511), we get a palindrome (6252526).

It can be divided in two parts, 11 and 51015, that multiplied together give a palindrome (561165).

The spelling of 1151015 in words is "one million, one hundred fifty-one thousand, fifteen".