1151520 has 48 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 306944.

The previous prime is 1151519. The next prime is 1151537. The reversal of 1151520 is 251511.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1151520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^1151520 is an apocalyptic number.

1151520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151520 is an abundant number, since it is smaller than the sum of its proper divisors (2477280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151520 is a wasteful number, since it uses less digits than its factorization.

1151520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2409 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1151520 is about 1073.0889991049. The cubic root of 1151520 is about 104.8150940713.

Subtracting from 1151520 its reverse (251511), we obtain a palindrome (900009).

The spelling of 1151520 in words is "one million, one hundred fifty-one thousand, five hundred twenty".