50651621 has 2 divisors, whose sum is σ = 50651622. Its totient is φ = 50651620.

The previous prime is 50651611. The next prime is 50651633. The reversal of 50651621 is 12615605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48580900 + 2070721 = 6970^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 50651621 - 2¹⁴ = 50635237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50651611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25325810 + 25325811.

It is an arithmetic number, because the mean of its divisors is an integer number (25325811).

Almost surely, 2^50651621 is an apocalyptic number.

It is an amenable number.

50651621 is a deficient number, since it is larger than the sum of its proper divisors (1).

50651621 is an equidigital number, since it uses as much as digits as its factorization.

50651621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 50651621 is about 7116.9952227046. The cubic root of 50651621 is about 369.9966422875.

The spelling of 50651621 in words is "fifty million, six hundred fifty-one thousand, six hundred twenty-one".