51448761 has 24 divisors (see below), whose sum is σ = 91465920. Its totient is φ = 27137376.

The previous prime is 51448753. The next prime is 51448777. The reversal of 51448761 is 16784415.

It is a happy number.

51448761 is a `hidden beast` number, since 514 + 4 + 87 + 61 = 666.

It is not a de Polignac number, because 51448761 - 2³ = 51448753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51448781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30591 + ... + 32228.

It is an arithmetic number, because the mean of its divisors is an integer number (3811080).

Almost surely, 2^51448761 is an apocalyptic number.

It is an amenable number.

51448761 is a deficient number, since it is larger than the sum of its proper divisors (40017159).

51448761 is a wasteful number, since it uses less digits than its factorization.

51448761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62845 (or 62842 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 51448761 is about 7172.7791684953. The cubic root of 51448761 is about 371.9275136254.

The spelling of 51448761 in words is "fifty-one million, four hundred forty-eight thousand, seven hundred sixty-one".