60615551 has 2 divisors, whose sum is σ = 60615552. Its totient is φ = 60615550.

The previous prime is 60615439. The next prime is 60615553. The reversal of 60615551 is 15551606.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60615551 - 2¹⁰ = 60614527 is a prime.

Together with 60615553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60615553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30307775 + 30307776.

It is an arithmetic number, because the mean of its divisors is an integer number (30307776).

Almost surely, 2^60615551 is an apocalyptic number.

60615551 is a deficient number, since it is larger than the sum of its proper divisors (1).

60615551 is an equidigital number, since it uses as much as digits as its factorization.

60615551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 60615551 is about 7785.5989493423. The cubic root of 60615551 is about 392.8209899388.

The spelling of 60615551 in words is "sixty million, six hundred fifteen thousand, five hundred fifty-one".