51411040 has 24 divisors (see below), whose sum is σ = 121458960. Its totient is φ = 20564352.

The previous prime is 51411037. The next prime is 51411047. The reversal of 51411040 is 4011415.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51411047) 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, 160500 + ... + 160819.

It is an arithmetic number, because the mean of its divisors is an integer number (5060790).

Almost surely, 2^51411040 is an apocalyptic number.

It is an amenable number.

51411040 is an abundant number, since it is smaller than the sum of its proper divisors (70047920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51411040 is a wasteful number, since it uses less digits than its factorization.

51411040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321334 (or 321326 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 51411040 is about 7170.1492313619. The cubic root of 51411040 is about 371.8365952854.

Adding to 51411040 its reverse (4011415), we get a palindrome (55422455).

The spelling of 51411040 in words is "fifty-one million, four hundred eleven thousand, forty".