651461 has 2 divisors, whose sum is σ = 651462. Its totient is φ = 651460.

The previous prime is 651439. The next prime is 651473. The reversal of 651461 is 164156.

651461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 21025 = 794^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 651461 - 2⁶ = 651397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325730 + 325731.

It is an arithmetic number, because the mean of its divisors is an integer number (325731).

2⁶⁵¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

651461 is a deficient number, since it is larger than the sum of its proper divisors (1).

651461 is an equidigital number, since it uses as much as digits as its factorization.

651461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 651461 is about 807.1313399937. The cubic root of 651461 is about 86.6887632678.

The spelling of 651461 in words is "six hundred fifty-one thousand, four hundred sixty-one".