51542130 has 32 divisors (see below), whose sum is σ = 130978944. Its totient is φ = 12935936.

The previous prime is 51542123. The next prime is 51542131. The reversal of 51542130 is 3124515.

It is a junction number, because it is equal to n+sod(n) for n = 51542097 and 51542106.

It is not an unprimeable number, because it can be changed into a prime (51542131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50022 + ... + 51041.

It is an arithmetic number, because the mean of its divisors is an integer number (4093092).

Almost surely, 2^51542130 is an apocalyptic number.

51542130 is an abundant number, since it is smaller than the sum of its proper divisors (79436814).

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

51542130 is a wasteful number, since it uses less digits than its factorization.

51542130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101090.

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

The square root of 51542130 is about 7179.2847833193. The cubic root of 51542130 is about 372.1523684993.

Adding to 51542130 its reverse (3124515), we get a palindrome (54666645).

The spelling of 51542130 in words is "fifty-one million, five hundred forty-two thousand, one hundred thirty".