51072741 has 32 divisors (see below), whose sum is σ = 82416000. Its totient is φ = 31135104.

The previous prime is 51072737. The next prime is 51072751. The reversal of 51072741 is 14727015.

It is not a de Polignac number, because 51072741 - 2² = 51072737 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51072751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13161 + ... + 16593.

It is an arithmetic number, because the mean of its divisors is an integer number (2575500).

Almost surely, 2^51072741 is an apocalyptic number.

It is an amenable number.

51072741 is a deficient number, since it is larger than the sum of its proper divisors (31343259).

51072741 is a wasteful number, since it uses less digits than its factorization.

51072741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3484 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 51072741 is about 7146.5195025271. The cubic root of 51072741 is about 371.0192035550.

Adding to 51072741 its reverse (14727015), we get a palindrome (65799756).

The spelling of 51072741 in words is "fifty-one million, seventy-two thousand, seven hundred forty-one".