51152340 has 48 divisors (see below), whose sum is σ = 143744832. Its totient is φ = 13591296.

The previous prime is 51152323. The next prime is 51152357. The reversal of 51152340 is 4325115.

It is an interprime number because it is at equal distance from previous prime (51152323) and next prime (51152357).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17032 + ... + 19808.

It is an arithmetic number, because the mean of its divisors is an integer number (2994684).

Almost surely, 2^51152340 is an apocalyptic number.

It is an amenable number.

51152340 is an abundant number, since it is smaller than the sum of its proper divisors (92592492).

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

51152340 is a wasteful number, since it uses less digits than its factorization.

51152340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51152340 is about 7152.0864088740. The cubic root of 51152340 is about 371.2118531472.

Adding to 51152340 its reverse (4325115), we get a palindrome (55477455).

The spelling of 51152340 in words is "fifty-one million, one hundred fifty-two thousand, three hundred forty".