61021151 has 2 divisors, whose sum is σ = 61021152. Its totient is φ = 61021150.

The previous prime is 61021127. The next prime is 61021157. The reversal of 61021151 is 15112016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61021151 - 2¹⁴ = 61004767 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 (61021157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30510575 + 30510576.

It is an arithmetic number, because the mean of its divisors is an integer number (30510576).

Almost surely, 2^61021151 is an apocalyptic number.

61021151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61021151 is an equidigital number, since it uses as much as digits as its factorization.

61021151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 61021151 is about 7811.6036125753. The cubic root of 61021151 is about 393.6952107859.

Adding to 61021151 its reverse (15112016), we get a palindrome (76133167).

The spelling of 61021151 in words is "sixty-one million, twenty-one thousand, one hundred fifty-one".