7122513 has 8 divisors (see below), whose sum is σ = 9515808. Its totient is φ = 4738784.

The previous prime is 7122509. The next prime is 7122517. The reversal of 7122513 is 3152217.

It is an interprime number because it is at equal distance from previous prime (7122509) and next prime (7122517).

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 7122513 - 2² = 7122509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7122513.

It is not an unprimeable number, because it can be changed into a prime (7122517) 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, 420 + ... + 3797.

It is an arithmetic number, because the mean of its divisors is an integer number (1189476).

Almost surely, 2^7122513 is an apocalyptic number.

It is an amenable number.

7122513 is a deficient number, since it is larger than the sum of its proper divisors (2393295).

7122513 is a wasteful number, since it uses less digits than its factorization.

7122513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783.

The product of its digits is 420, while the sum is 21.

The square root of 7122513 is about 2668.8036645658. The cubic root of 7122513 is about 192.4026651343.

The spelling of 7122513 in words is "seven million, one hundred twenty-two thousand, five hundred thirteen".