55216070361 has 33 divisors (see below), whose sum is σ = 82909376661. Its totient is φ = 36772646652.

The previous prime is 55216070347. The next prime is 55216070407. The reversal of 55216070361 is 16307061255.

The square root of 55216070361 is 234981.

It is a perfect power (a square), and thus also a powerful number.

55216070361 is a `hidden beast` number, since 5 + 521 + 6 + 0 + 70 + 3 + 61 = 666.

It is not a de Polignac number, because 55216070361 - 2⁹ = 55216069849 is a prime.

It is a super-2 number, since 2×55216070361² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55216070461) by changing a digit.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 57099900 + ... + 57100866.

Almost surely, 2^55216070361 is an apocalyptic number.

55216070361 is the 234981-st square number.

55216070361 is the 117491-st centered octagonal number.

It is an amenable number.

55216070361 is a deficient number, since it is larger than the sum of its proper divisors (27693306300).

55216070361 is an frugal number, since it uses more digits than its factorization.

55216070361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

Multiplying 55216070361 by its sum of digits (36), we get a square (1987778532996 = 1409886²).

It can be divided in two parts, 552160 and 70361, that added together give a square (622521 = 789²).

The spelling of 55216070361 in words is "fifty-five billion, two hundred sixteen million, seventy thousand, three hundred sixty-one".