7157961 has 6 divisors (see below), whose sum is σ = 10339290. Its totient is φ = 4771968.

The previous prime is 7157933. The next prime is 7157963. The reversal of 7157961 is 1697517.

7157961 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 2996361 = 2040^2 + 1731^2 .

It is not a de Polignac number, because 7157961 - 2⁶ = 7157897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7157963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 397656 + ... + 397673.

It is an arithmetic number, because the mean of its divisors is an integer number (1723215).

Almost surely, 2^7157961 is an apocalyptic number.

It is an amenable number.

7157961 is a deficient number, since it is larger than the sum of its proper divisors (3181329).

7157961 is a wasteful number, since it uses less digits than its factorization.

7157961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795335 (or 795332 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 7157961 is about 2675.4365998842. The cubic root of 7157961 is about 192.7213263630.

It can be divided in two parts, 7157 and 961, that added together give a palindrome (8118).

The spelling of 7157961 in words is "seven million, one hundred fifty-seven thousand, nine hundred sixty-one".