51223455432215 has 48 divisors (see below), whose sum is σ = 67999167381600. Its totient is φ = 37013707019520.

The previous prime is 51223455432199. The next prime is 51223455432217.

51223455432215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51223455432215 - 2⁴ = 51223455432199 is a prime.

It is a super-2 number, since 2×51223455432215² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51223455432217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 334129601 + ... + 334282869.

It is an arithmetic number, because the mean of its divisors is an integer number (1416649320450).

Almost surely, 2^{51223455432215} is an apocalyptic number.

51223455432215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51223455432215 is a deficient number, since it is larger than the sum of its proper divisors (16775711949385).

51223455432215 is a wasteful number, since it uses less digits than its factorization.

51223455432215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156848 (or 156837 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 44.

The spelling of 51223455432215 in words is "fifty-one trillion, two hundred twenty-three billion, four hundred fifty-five million, four hundred thirty-two thousand, two hundred fifteen".