51377652 has 30 divisors (see below), whose sum is σ = 134312178. Its totient is φ = 17125776.

The previous prime is 51377611. The next prime is 51377657. The reversal of 51377652 is 25677315.

It can be written as a sum of positive squares in only one way, i.e., 51322896 + 54756 = 7164^2 + 234^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51377657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78963 + ... + 79610.

Almost surely, 2^51377652 is an apocalyptic number.

It is an amenable number.

51377652 is an abundant number, since it is smaller than the sum of its proper divisors (82934526).

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

51377652 is a wasteful number, since it uses less digits than its factorization.

51377652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158589 (or 158578 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 51377652 is about 7167.8205892726. The cubic root of 51377652 is about 371.7560835980.

The spelling of 51377652 in words is "fifty-one million, three hundred seventy-seven thousand, six hundred fifty-two".