1012516451 has 4 divisors (see below), whose sum is σ = 1045178304. Its totient is φ = 979854600.

The previous prime is 1012516429. The next prime is 1012516459. The reversal of 1012516451 is 1546152101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012516451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012516451.

It is not an unprimeable number, because it can be changed into a prime (1012516459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16330880 + ... + 16330941.

It is an arithmetic number, because the mean of its divisors is an integer number (261294576).

Almost surely, 2^1012516451 is an apocalyptic number.

1012516451 is a deficient number, since it is larger than the sum of its proper divisors (32661853).

1012516451 is an equidigital number, since it uses as much as digits as its factorization.

1012516451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32661852.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1012516451 is about 31820.0636548703. The cubic root of 1012516451 is about 1004.1548635340.

Adding to 1012516451 its reverse (1546152101), we get a palindrome (2558668552).

The spelling of 1012516451 in words is "one billion, twelve million, five hundred sixteen thousand, four hundred fifty-one".