51035380 has 36 divisors (see below), whose sum is σ = 117808740. Its totient is φ = 18557440.

The previous prime is 51035357. The next prime is 51035381. The reversal of 51035380 is 8353015.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38489616 + 12545764 = 6204^2 + 3542^2 .

It is a super-2 number, since 2×51035380² = 5209220023488800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51035381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8125 + ... + 12964.

It is an arithmetic number, because the mean of its divisors is an integer number (3272465).

Almost surely, 2^51035380 is an apocalyptic number.

It is an amenable number.

51035380 is an abundant number, since it is smaller than the sum of its proper divisors (66773360).

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

51035380 is a wasteful number, since it uses less digits than its factorization.

51035380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21120 (or 21107 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51035380 is about 7143.9050945544. The cubic root of 51035380 is about 370.9287115129.

Adding to 51035380 its reverse (8353015), we get a palindrome (59388395).

It can be divided in two parts, 51035 and 380, that added together give a palindrome (51415).

The spelling of 51035380 in words is "fifty-one million, thirty-five thousand, three hundred eighty".