55696369 has 9 divisors (see below), whose sum is σ = 59300427. Its totient is φ = 52300704.

The previous prime is 55696351. The next prime is 55696373. The reversal of 55696369 is 96369655.

55696369 = 287² + 288² + ... + 575².

It is a happy number.

The square root of 55696369 is 7463.

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

It can be written as a sum of positive squares in only one way, i.e., 43362225 + 12334144 = 6585^2 + 3512^2 .

It is not a de Polignac number, because 55696369 - 2⁷ = 55696241 is a prime.

It is a super-2 number, since 2×55696369² = 6204171039568322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55696169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 126652 + ... + 127090.

Almost surely, 2^55696369 is an apocalyptic number.

55696369 is the 7463-rd square number.

55696369 is the 3732-nd centered octagonal number.

It is an amenable number.

55696369 is a deficient number, since it is larger than the sum of its proper divisors (3604058).

55696369 is an frugal number, since it uses more digits than its factorization.

55696369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 456 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 49.

The cubic root of 55696369 is about 381.8935245036.

Multiplying 55696369 by its sum of digits (49), we get a square (2729122081 = 52241²).

It can be divided in two parts, 55696 and 369, that added together give a palindrome (56065).

The spelling of 55696369 in words is "fifty-five million, six hundred ninety-six thousand, three hundred sixty-nine".