1051515243 has 16 divisors (see below), whose sum is σ = 1563872160. Its totient is φ = 698277888.

The previous prime is 1051515239. The next prime is 1051515251. The reversal of 1051515243 is 3425151501.

1051515243 is a `hidden beast` number, since 105 + 1 + 515 + 2 + 43 = 666.

It is not a de Polignac number, because 1051515243 - 2² = 1051515239 is a prime.

It is a super-2 number, since 2×1051515243² = 2211368612522698098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1051515203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68830 + ... + 82707.

It is an arithmetic number, because the mean of its divisors is an integer number (97742010).

Almost surely, 2^1051515243 is an apocalyptic number.

1051515243 is a deficient number, since it is larger than the sum of its proper divisors (512356917).

1051515243 is a wasteful number, since it uses less digits than its factorization.

1051515243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151803 (or 151797 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1051515243 is about 32427.0757701030. The cubic root of 1051515243 is about 1016.8850384754.

Adding to 1051515243 its reverse (3425151501), we get a palindrome (4476666744).

The spelling of 1051515243 in words is "one billion, fifty-one million, five hundred fifteen thousand, two hundred forty-three".