4661537 has 2 divisors, whose sum is σ = 4661538. Its totient is φ = 4661536.

The previous prime is 4661513. The next prime is 4661539. The reversal of 4661537 is 7351664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4661281 + 256 = 2159^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 4661537 - 2¹² = 4657441 is a prime.

Together with 4661539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4661539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330768 + 2330769.

It is an arithmetic number, because the mean of its divisors is an integer number (2330769).

Almost surely, 2^4661537 is an apocalyptic number.

It is an amenable number.

4661537 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661537 is an equidigital number, since it uses as much as digits as its factorization.

4661537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 4661537 is about 2159.0592858928. The cubic root of 4661537 is about 167.0486788423.

The spelling of 4661537 in words is "four million, six hundred sixty-one thousand, five hundred thirty-seven".