7215416551 has 6 divisors (see below), whose sum is σ = 8393443800. Its totient is φ = 6184642716.

The previous prime is 7215416531. The next prime is 7215416567. The reversal of 7215416551 is 1556145127.

It is not a de Polignac number, because 7215416551 - 2¹³ = 7215408359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7215416551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215416531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73626651 + ... + 73626748.

It is an arithmetic number, because the mean of its divisors is an integer number (1398907300).

Almost surely, 2^7215416551 is an apocalyptic number.

7215416551 is a deficient number, since it is larger than the sum of its proper divisors (1178027249).

7215416551 is a wasteful number, since it uses less digits than its factorization.

7215416551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147253413 (or 147253406 counting only the distinct ones).

The product of its digits is 42000, while the sum is 37.

The square root of 7215416551 is about 84943.6080644094. The cubic root of 7215416551 is about 1932.3559826782.

The spelling of 7215416551 in words is "seven billion, two hundred fifteen million, four hundred sixteen thousand, five hundred fifty-one".