51153420 has 24 divisors (see below), whose sum is σ = 143229744. Its totient is φ = 13640896.

The previous prime is 51153407. The next prime is 51153433. The reversal of 51153420 is 2435115.

It is an interprime number because it is at equal distance from previous prime (51153407) and next prime (51153433).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426219 + ... + 426338.

It is an arithmetic number, because the mean of its divisors is an integer number (5967906).

Almost surely, 2^51153420 is an apocalyptic number.

It is an amenable number.

51153420 is an abundant number, since it is smaller than the sum of its proper divisors (92076324).

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

51153420 is a wasteful number, since it uses less digits than its factorization.

51153420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852569 (or 852567 counting only the distinct ones).

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

The square root of 51153420 is about 7152.1619109190. The cubic root of 51153420 is about 371.2144656440.

Adding to 51153420 its reverse (2435115), we get a palindrome (53588535).

The spelling of 51153420 in words is "fifty-one million, one hundred fifty-three thousand, four hundred twenty".