51011356 has 48 divisors (see below), whose sum is σ = 105380352. Its totient is φ = 21344000.

The previous prime is 51011351. The next prime is 51011357. The reversal of 51011356 is 65311015.

51011356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51011351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34431 + ... + 35881.

It is an arithmetic number, because the mean of its divisors is an integer number (2195424).

Almost surely, 2^51011356 is an apocalyptic number.

It is an amenable number.

51011356 is an abundant number, since it is smaller than the sum of its proper divisors (54368996).

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

51011356 is a wasteful number, since it uses less digits than its factorization.

51011356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 51011356 is about 7142.2234633201. The cubic root of 51011356 is about 370.8704996738.

The spelling of 51011356 in words is "fifty-one million, eleven thousand, three hundred fifty-six".