67042551 has 8 divisors (see below), whose sum is σ = 89647600. Its totient is φ = 44566272.

The previous prime is 67042541. The next prime is 67042571. The reversal of 67042551 is 15524076.

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

It is not a de Polignac number, because 67042551 - 2¹⁷ = 66911479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67042501) 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, 30970 + ... + 33063.

It is an arithmetic number, because the mean of its divisors is an integer number (11205950).

Almost surely, 2^67042551 is an apocalyptic number.

67042551 is a deficient number, since it is larger than the sum of its proper divisors (22605049).

67042551 is a wasteful number, since it uses less digits than its factorization.

67042551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64385.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 67042551 is about 8187.9515753331. The cubic root of 67042551 is about 406.2407734078.

The spelling of 67042551 in words is "sixty-seven million, forty-two thousand, five hundred fifty-one".