7154987 has 4 divisors (see below), whose sum is σ = 8177136. Its totient is φ = 6132840.

The previous prime is 7154981. The next prime is 7154993. The reversal of 7154987 is 7894517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7894517 = 2179 ⋅3623.

It is an interprime number because it is at equal distance from previous prime (7154981) and next prime (7154993).

It is not a de Polignac number, because 7154987 - 2⁴ = 7154971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7154981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511064 + ... + 511077.

It is an arithmetic number, because the mean of its divisors is an integer number (2044284).

Almost surely, 2^7154987 is an apocalyptic number.

7154987 is a deficient number, since it is larger than the sum of its proper divisors (1022149).

7154987 is a wasteful number, since it uses less digits than its factorization.

7154987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022148.

The product of its digits is 70560, while the sum is 41.

The square root of 7154987 is about 2674.8807450053. The cubic root of 7154987 is about 192.6946319537.

The spelling of 7154987 in words is "seven million, one hundred fifty-four thousand, nine hundred eighty-seven".