15242401 has 2 divisors, whose sum is σ = 15242402. Its totient is φ = 15242400.

The previous prime is 15242329. The next prime is 15242417. The reversal of 15242401 is 10424251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14432401 + 810000 = 3799^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 15242401 - 2¹¹ = 15240353 is a prime.

It is not a weakly prime, because it can be changed into another prime (15242431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7621200 + 7621201.

It is an arithmetic number, because the mean of its divisors is an integer number (7621201).

Almost surely, 2^15242401 is an apocalyptic number.

It is an amenable number.

15242401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15242401 is an equidigital number, since it uses as much as digits as its factorization.

15242401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 15242401 is about 3904.1517644682. The cubic root of 15242401 is about 247.9425866488.

Adding to 15242401 its reverse (10424251), we get a palindrome (25666652).

The spelling of 15242401 in words is "fifteen million, two hundred forty-two thousand, four hundred one".