7151144 has 128 divisors (see below), whose sum is σ = 19353600. Its totient is φ = 2384640.

The previous prime is 7151143. The next prime is 7151147. The reversal of 7151144 is 4411517.

It is a happy number.

It is a super-2 number, since 2×7151144² = 102277721017472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7151141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152129 + ... + 152175.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

Almost surely, 2^7151144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7151144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9676800).

7151144 is an abundant number, since it is smaller than the sum of its proper divisors (12202456).

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

7151144 is a wasteful number, since it uses less digits than its factorization.

7151144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 99 counting only the distinct ones).

The product of its digits is 560, while the sum is 23.

The square root of 7151144 is about 2674.1622987396. The cubic root of 7151144 is about 192.6601265059.

It can be divided in two parts, 71 and 51144, that added together give a palindrome (51215).

The spelling of 7151144 in words is "seven million, one hundred fifty-one thousand, one hundred forty-four".