51421088 has 12 divisors (see below), whose sum is σ = 101235330. Its totient is φ = 25710528.

The previous prime is 51421081. The next prime is 51421091. The reversal of 51421088 is 88012415.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 327184 = 7148^2 + 572^2 .

It is a super-2 number, since 2×51421088² = 5288256582207488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51421088.

It is not an unprimeable number, because it can be changed into a prime (51421081) 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 as a sum of consecutive naturals, namely, 803423 + ... + 803486.

Almost surely, 2^51421088 is an apocalyptic number.

It is an amenable number.

51421088 is a deficient number, since it is larger than the sum of its proper divisors (49814242).

51421088 is a wasteful number, since it uses less digits than its factorization.

51421088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606919 (or 1606911 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 51421088 is about 7170.8498798957. The cubic root of 51421088 is about 371.8608181678.

The spelling of 51421088 in words is "fifty-one million, four hundred twenty-one thousand, eighty-eight".