7155030 has 32 divisors (see below), whose sum is σ = 17395200. Its totient is φ = 1883232.

The previous prime is 7155019. The next prime is 7155037. The reversal of 7155030 is 305517.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7154988 and 7155006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7155037) 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 15 ways as a sum of consecutive naturals, for example, 861 + ... + 3879.

It is an arithmetic number, because the mean of its divisors is an integer number (543600).

Almost surely, 2^7155030 is an apocalyptic number.

7155030 is an abundant number, since it is smaller than the sum of its proper divisors (10240170).

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

7155030 is a wasteful number, since it uses less digits than its factorization.

7155030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 7155030 is about 2674.8887827347. Note that the first 3 decimals coincide. The cubic root of 7155030 is about 192.6950179713.

The spelling of 7155030 in words is "seven million, one hundred fifty-five thousand, thirty".