51542970 has 32 divisors (see below), whose sum is σ = 124867008. Its totient is φ = 13615488.

The previous prime is 51542957. The next prime is 51542971. The reversal of 51542970 is 7924515.

It is not an unprimeable number, because it can be changed into a prime (51542971) 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, 4819 + ... + 11238.

It is an arithmetic number, because the mean of its divisors is an integer number (3902094).

Almost surely, 2^51542970 is an apocalyptic number.

51542970 is an abundant number, since it is smaller than the sum of its proper divisors (73324038).

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

51542970 is a wasteful number, since it uses less digits than its factorization.

51542970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16174.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 51542970 is about 7179.3432847302. The cubic root of 51542970 is about 372.1543901872.

The spelling of 51542970 in words is "fifty-one million, five hundred forty-two thousand, nine hundred seventy".