215051542 has 8 divisors (see below), whose sum is σ = 322869456. Its totient is φ = 107428392.

The previous prime is 215051531. The next prime is 215051549. The reversal of 215051542 is 245150512.

215051542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×215051542³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215051549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45898 + ... + 50365.

It is an arithmetic number, because the mean of its divisors is an integer number (40358682).

Almost surely, 2^215051542 is an apocalyptic number.

215051542 is a deficient number, since it is larger than the sum of its proper divisors (107817914).

215051542 is a wasteful number, since it uses less digits than its factorization.

215051542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97382.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 215051542 is about 14664.6357609045. The cubic root of 215051542 is about 599.1205096058.

The spelling of 215051542 in words is "two hundred fifteen million, fifty-one thousand, five hundred forty-two".