51077340 has 36 divisors (see below), whose sum is σ = 154935144. Its totient is φ = 13620576.

The previous prime is 51077321. The next prime is 51077363. The reversal of 51077340 is 4377015.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×51077340² = 5217789322951200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141702 + ... + 142061.

It is an arithmetic number, because the mean of its divisors is an integer number (4303754).

Almost surely, 2^51077340 is an apocalyptic number.

It is an amenable number.

51077340 is an abundant number, since it is smaller than the sum of its proper divisors (103857804).

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

51077340 is a wasteful number, since it uses less digits than its factorization.

51077340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283778 (or 283773 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 51077340 is about 7146.8412603051. The cubic root of 51077340 is about 371.0303397376.

The spelling of 51077340 in words is "fifty-one million, seventy-seven thousand, three hundred forty".