361651 has 2 divisors, whose sum is σ = 361652. Its totient is φ = 361650.

The previous prime is 361649. The next prime is 361663. The reversal of 361651 is 156163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361651 - 2¹ = 361649 is a prime.

Together with 361649, 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 (361351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180825 + 180826.

It is an arithmetic number, because the mean of its divisors is an integer number (180826).

2³⁶¹⁶⁵¹ is an apocalyptic number.

361651 is a deficient number, since it is larger than the sum of its proper divisors (1).

361651 is an equidigital number, since it uses as much as digits as its factorization.

361651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 22.

The square root of 361651 is about 601.3742595090. The cubic root of 361651 is about 71.2464489869.

The spelling of 361651 in words is "three hundred sixty-one thousand, six hundred fifty-one".