15381061 has 2 divisors, whose sum is σ = 15381062. Its totient is φ = 15381060.

The previous prime is 15381059. The next prime is 15381101. The reversal of 15381061 is 16018351.

15381061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15358561 + 22500 = 3919^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 15381061 - 2¹ = 15381059 is a prime.

Together with 15381059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15381031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7690530 + 7690531.

It is an arithmetic number, because the mean of its divisors is an integer number (7690531).

Almost surely, 2^15381061 is an apocalyptic number.

It is an amenable number.

15381061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15381061 is an equidigital number, since it uses as much as digits as its factorization.

15381061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 15381061 is about 3921.8695796775. The cubic root of 15381061 is about 248.6921621714.

The spelling of 15381061 in words is "fifteen million, three hundred eighty-one thousand, sixty-one".