51053421 has 8 divisors (see below), whose sum is σ = 69519744. Its totient is φ = 33311360.

The previous prime is 51053413. The next prime is 51053459. The reversal of 51053421 is 12435015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51053421 - 2³ = 51053413 is a prime.

It is a super-5 number, since 5×51053421⁵ (a number of 40 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51053411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180900 + ... + 181181.

It is an arithmetic number, because the mean of its divisors is an integer number (8689968).

Almost surely, 2^51053421 is an apocalyptic number.

It is an amenable number.

51053421 is a deficient number, since it is larger than the sum of its proper divisors (18466323).

51053421 is a wasteful number, since it uses less digits than its factorization.

51053421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362131.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51053421 is about 7145.1676677318. The cubic root of 51053421 is about 370.9724141136.

Adding to 51053421 its reverse (12435015), we get a palindrome (63488436).

It can be divided in two parts, 510534 and 21, that added together give a triangular number (510555 = T₁₀₁₀).

The spelling of 51053421 in words is "fifty-one million, fifty-three thousand, four hundred twenty-one".