11980537 has 2 divisors, whose sum is σ = 11980538. Its totient is φ = 11980536.

The previous prime is 11980523. The next prime is 11980543. The reversal of 11980537 is 73508911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6007401 + 5973136 = 2451^2 + 2444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11980537 is a prime.

It is not a weakly prime, because it can be changed into another prime (11980547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5990268 + 5990269.

It is an arithmetic number, because the mean of its divisors is an integer number (5990269).

Almost surely, 2^11980537 is an apocalyptic number.

It is an amenable number.

11980537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11980537 is an equidigital number, since it uses as much as digits as its factorization.

11980537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 11980537 is about 3461.2912330516. The cubic root of 11980537 is about 228.8190061253.

It can be divided in two parts, 119 and 80537, that added together give a square (80656 = 284²).

The spelling of 11980537 in words is "eleven million, nine hundred eighty thousand, five hundred thirty-seven".