7220151 has 8 divisors (see below), whose sum is σ = 10696560. Its totient is φ = 4813416.

The previous prime is 7220149. The next prime is 7220153. The reversal of 7220151 is 1510227.

It is an interprime number because it is at equal distance from previous prime (7220149) and next prime (7220153).

It is not a de Polignac number, because 7220151 - 2¹ = 7220149 is a prime.

7220151 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220153) 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, 133680 + ... + 133733.

It is an arithmetic number, because the mean of its divisors is an integer number (1337070).

Almost surely, 2^7220151 is an apocalyptic number.

7220151 is a deficient number, since it is larger than the sum of its proper divisors (3476409).

7220151 is a wasteful number, since it uses less digits than its factorization.

7220151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267422 (or 267416 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 7220151 is about 2687.0338665525. The cubic root of 7220151 is about 193.2778533501.

Adding to 7220151 its reverse (1510227), we get a palindrome (8730378).

The spelling of 7220151 in words is "seven million, two hundred twenty thousand, one hundred fifty-one".