51021034451 has 8 divisors (see below), whose sum is σ = 52669878144. Its totient is φ = 49372378560.

The previous prime is 51021034439. The next prime is 51021034489. The reversal of 51021034451 is 15443012015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51021034451 - 2¹⁴ = 51021018067 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 51021034451.

It is not an unprimeable number, because it can be changed into a prime (51021034751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688055 + ... + 758591.

It is an arithmetic number, because the mean of its divisors is an integer number (6583734768).

Almost surely, 2^51021034451 is an apocalyptic number.

51021034451 is a deficient number, since it is larger than the sum of its proper divisors (1648843693).

51021034451 is a wasteful number, since it uses less digits than its factorization.

51021034451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93901.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 51021034451 its reverse (15443012015), we get a palindrome (66464046466).

The spelling of 51021034451 in words is "fifty-one billion, twenty-one million, thirty-four thousand, four hundred fifty-one".