51410749 has 8 divisors (see below), whose sum is σ = 55720280. Its totient is φ = 47151936.

The previous prime is 51410747. The next prime is 51410791. The reversal of 51410749 is 94701415.

It can be written as a sum of positive squares in 4 ways, for example, as 7387524 + 44023225 = 2718^2 + 6635^2 .

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

It is not a de Polignac number, because 51410749 - 2¹ = 51410747 is a prime.

It is a super-2 number, since 2×51410749² = 5286130225482002, which contains 22 as substring.

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 51410749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51410747) 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, 10554 + ... + 14635.

It is an arithmetic number, because the mean of its divisors is an integer number (6965035).

Almost surely, 2^51410749 is an apocalyptic number.

It is an amenable number.

51410749 is a deficient number, since it is larger than the sum of its proper divisors (4309531).

51410749 is a wasteful number, since it uses less digits than its factorization.

51410749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25359.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 51410749 is about 7170.1289388685. The cubic root of 51410749 is about 371.8358937198.

The spelling of 51410749 in words is "fifty-one million, four hundred ten thousand, seven hundred forty-nine".