1615260061 has 2 divisors, whose sum is σ = 1615260062. Its totient is φ = 1615260060.

The previous prime is 1615260029. The next prime is 1615260089. The reversal of 1615260061 is 1600625161.

It is an a-pointer prime, because the next prime (1615260089) can be obtained adding 1615260061 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1329987961 + 285272100 = 36469^2 + 16890^2 .

It is an emirp because it is prime and its reverse (1600625161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1615260061 - 2⁵ = 1615260029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1615260001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807630030 + 807630031.

It is an arithmetic number, because the mean of its divisors is an integer number (807630031).

Almost surely, 2^1615260061 is an apocalyptic number.

It is an amenable number.

1615260061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615260061 is an equidigital number, since it uses as much as digits as its factorization.

1615260061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1615260061 is about 40190.2980954359. The cubic root of 1615260061 is about 1173.3137268500.

The spelling of 1615260061 in words is "one billion, six hundred fifteen million, two hundred sixty thousand, sixty-one".