51761532 has 24 divisors (see below), whose sum is σ = 127881936. Its totient is φ = 16238848.

The previous prime is 51761531. The next prime is 51761533. The reversal of 51761532 is 23516715.

It is an interprime number because it is at equal distance from previous prime (51761531) and next prime (51761533).

It is a self number, because there is not a number n which added to its sum of digits gives 51761532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51761531) 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, 126663 + ... + 127070.

It is an arithmetic number, because the mean of its divisors is an integer number (5328414).

Almost surely, 2^51761532 is an apocalyptic number.

It is an amenable number.

51761532 is an abundant number, since it is smaller than the sum of its proper divisors (76120404).

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

51761532 is a wasteful number, since it uses less digits than its factorization.

51761532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253757 (or 253755 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 51761532 is about 7194.5487697284. The cubic root of 51761532 is about 372.6796742924.

The spelling of 51761532 in words is "fifty-one million, seven hundred sixty-one thousand, five hundred thirty-two".