60902021 has 2 divisors, whose sum is σ = 60902022. Its totient is φ = 60902020.

The previous prime is 60901991. The next prime is 60902047. The reversal of 60902021 is 12020906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37957921 + 22944100 = 6161^2 + 4790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60902021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 60901984 and 60902002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60902071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30451010 + 30451011.

It is an arithmetic number, because the mean of its divisors is an integer number (30451011).

Almost surely, 2^60902021 is an apocalyptic number.

It is an amenable number.

60902021 is a deficient number, since it is larger than the sum of its proper divisors (1).

60902021 is an equidigital number, since it uses as much as digits as its factorization.

60902021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 60902021 is about 7803.9746924244. The cubic root of 60902021 is about 393.4388435866.

Adding to 60902021 its reverse (12020906), we get a palindrome (72922927).

The spelling of 60902021 in words is "sixty million, nine hundred two thousand, twenty-one".