5215155111 has 20 divisors (see below), whose sum is σ = 7971721032. Its totient is φ = 3395912688.

The previous prime is 5215155103. The next prime is 5215155133. The reversal of 5215155111 is 1115515125.

It is a happy number.

5215155111 is a `hidden beast` number, since 52 + 1 + 51 + 551 + 11 = 666.

It is not a de Polignac number, because 5215155111 - 2³ = 5215155103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215155181) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 745176 + ... + 752141.

Almost surely, 2^5215155111 is an apocalyptic number.

5215155111 is a deficient number, since it is larger than the sum of its proper divisors (2756565921).

5215155111 is a wasteful number, since it uses less digits than its factorization.

5215155111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497372 (or 1497363 counting only the distinct ones).

The product of its digits is 1250, while the sum is 27.

The square root of 5215155111 is about 72216.0308449585. The cubic root of 5215155111 is about 1734.1596487387.

The spelling of 5215155111 in words is "five billion, two hundred fifteen million, one hundred fifty-five thousand, one hundred eleven".