102615641 has 2 divisors, whose sum is σ = 102615642. Its totient is φ = 102615640.

The previous prime is 102615629. The next prime is 102615679. The reversal of 102615641 is 146516201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81721600 + 20894041 = 9040^2 + 4571^2 .

It is a cyclic number.

It is not a de Polignac number, because 102615641 - 2¹⁴ = 102599257 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102615641.

It is not a weakly prime, because it can be changed into another prime (102675641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51307820 + 51307821.

It is an arithmetic number, because the mean of its divisors is an integer number (51307821).

Almost surely, 2^102615641 is an apocalyptic number.

It is an amenable number.

102615641 is a deficient number, since it is larger than the sum of its proper divisors (1).

102615641 is an equidigital number, since it uses as much as digits as its factorization.

102615641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 102615641 is about 10129.9378576574. The cubic root of 102615641 is about 468.1710131224.

The spelling of 102615641 in words is "one hundred two million, six hundred fifteen thousand, six hundred forty-one".