15242505 has 16 divisors (see below), whose sum is σ = 24577344. Its totient is φ = 8066240.

The previous prime is 15242501. The next prime is 15242531. The reversal of 15242505 is 50524251.

It is a happy number.

It is not a de Polignac number, because 15242505 - 2² = 15242501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15242501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1914 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (1536084).

Almost surely, 2^15242505 is an apocalyptic number.

15242505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15242505 is a deficient number, since it is larger than the sum of its proper divisors (9334839).

15242505 is a wasteful number, since it uses less digits than its factorization.

15242505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7896.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 15242505 is about 3904.1650835998. The cubic root of 15242505 is about 247.9431505576.

Adding to 15242505 its reverse (50524251), we get a palindrome (65766756).

The spelling of 15242505 in words is "fifteen million, two hundred forty-two thousand, five hundred five".