656150401 has 2 divisors, whose sum is σ = 656150402. Its totient is φ = 656150400.

The previous prime is 656150381. The next prime is 656150413. The reversal of 656150401 is 104051656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650505025 + 5645376 = 25505^2 + 2376^2 .

It is a cyclic number.

It is not a de Polignac number, because 656150401 - 2⁹ = 656149889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656150401.

It is not a weakly prime, because it can be changed into another prime (656150701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328075200 + 328075201.

It is an arithmetic number, because the mean of its divisors is an integer number (328075201).

Almost surely, 2^656150401 is an apocalyptic number.

It is an amenable number.

656150401 is a deficient number, since it is larger than the sum of its proper divisors (1).

656150401 is an equidigital number, since it uses as much as digits as its factorization.

656150401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 656150401 is about 25615.4328677069. The cubic root of 656150401 is about 868.9626959779.

The spelling of 656150401 in words is "six hundred fifty-six million, one hundred fifty thousand, four hundred one".