55070987 has 8 divisors (see below), whose sum is σ = 58037760. Its totient is φ = 52111080.

The previous prime is 55070969. The next prime is 55070989. The reversal of 55070987 is 78907055.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55070987 - 2⁶ = 55070923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55070989) 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, 29162 + ... + 30992.

It is an arithmetic number, because the mean of its divisors is an integer number (7254720).

Almost surely, 2^55070987 is an apocalyptic number.

55070987 is a deficient number, since it is larger than the sum of its proper divisors (2966773).

55070987 is a wasteful number, since it uses less digits than its factorization.

55070987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 55070987 is about 7420.9828863837. The cubic root of 55070987 is about 380.4587879708.

The spelling of 55070987 in words is "fifty-five million, seventy thousand, nine hundred eighty-seven".