132721357 has 2 divisors, whose sum is σ = 132721358. Its totient is φ = 132721356.

The previous prime is 132721333. The next prime is 132721361. The reversal of 132721357 is 753127231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81613156 + 51108201 = 9034^2 + 7149^2 .

It is an emirp because it is prime and its reverse (753127231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132721357 - 2⁷ = 132721229 is a prime.

It is a super-2 number, since 2×132721357² = 35229917207842898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132721307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66360678 + 66360679.

It is an arithmetic number, because the mean of its divisors is an integer number (66360679).

Almost surely, 2^132721357 is an apocalyptic number.

It is an amenable number.

132721357 is a deficient number, since it is larger than the sum of its proper divisors (1).

132721357 is an equidigital number, since it uses as much as digits as its factorization.

132721357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 31.

The square root of 132721357 is about 11520.4755544205. The cubic root of 132721357 is about 510.0901506661.

Adding to 132721357 its reverse (753127231), we get a palindrome (885848588).

The spelling of 132721357 in words is "one hundred thirty-two million, seven hundred twenty-one thousand, three hundred fifty-seven".