51461544 has 32 divisors (see below), whose sum is σ = 133092000. Its totient is φ = 16562112.

The previous prime is 51461539. The next prime is 51461549. The reversal of 51461544 is 44516415.

It is an interprime number because it is at equal distance from previous prime (51461539) and next prime (51461549).

It is not an unprimeable number, because it can be changed into a prime (51461549) 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, 36274 + ... + 37665.

It is an arithmetic number, because the mean of its divisors is an integer number (4159125).

Almost surely, 2^51461544 is an apocalyptic number.

It is an amenable number.

51461544 is an abundant number, since it is smaller than the sum of its proper divisors (81630456).

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

51461544 is a wasteful number, since it uses less digits than its factorization.

51461544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73977 (or 73973 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 51461544 is about 7173.6701903558. The cubic root of 51461544 is about 371.9583142097.

Adding to 51461544 its reverse (44516415), we get a palindrome (95977959).

The spelling of 51461544 in words is "fifty-one million, four hundred sixty-one thousand, five hundred forty-four".