621051029 has 2 divisors, whose sum is σ = 621051030. Its totient is φ = 621051028.

The previous prime is 621051007. The next prime is 621051103. The reversal of 621051029 is 920150126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 482988529 + 138062500 = 21977^2 + 11750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621051029 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 621050989 and 621051007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621051829) 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, 310525514 + 310525515.

It is an arithmetic number, because the mean of its divisors is an integer number (310525515).

Almost surely, 2^621051029 is an apocalyptic number.

It is an amenable number.

621051029 is a deficient number, since it is larger than the sum of its proper divisors (1).

621051029 is an equidigital number, since it uses as much as digits as its factorization.

621051029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 621051029 is about 24920.8954293380. The cubic root of 621051029 is about 853.1834620253.

The spelling of 621051029 in words is "six hundred twenty-one million, fifty-one thousand, twenty-nine".