51403356 has 24 divisors (see below), whose sum is σ = 133268240. Its totient is φ = 17134416.

The previous prime is 51403351. The next prime is 51403369. The reversal of 51403356 is 65330415.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51403351) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 237871 + ... + 238086.

Almost surely, 2^51403356 is an apocalyptic number.

It is an amenable number.

51403356 is an abundant number, since it is smaller than the sum of its proper divisors (81864884).

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

51403356 is a wasteful number, since it uses less digits than its factorization.

51403356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475970 (or 475962 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 51403356 is about 7169.6133786976. The cubic root of 51403356 is about 371.8180692078.

It can be divided in two parts, 514033 and 56, that added together give a square (514089 = 717²).

The spelling of 51403356 in words is "fifty-one million, four hundred three thousand, three hundred fifty-six".