55216948 has 6 divisors (see below), whose sum is σ = 96629666. Its totient is φ = 27608472.

The previous prime is 55216943. The next prime is 55216991. The reversal of 55216948 is 84961255.

It can be written as a sum of positive squares in only one way, i.e., 47499664 + 7717284 = 6892^2 + 2778^2 .

It is a super-2 number, since 2×55216948² = 6097822692869408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55216948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6902115 + ... + 6902122.

Almost surely, 2^55216948 is an apocalyptic number.

It is an amenable number.

55216948 is a deficient number, since it is larger than the sum of its proper divisors (41412718).

55216948 is a wasteful number, since it uses less digits than its factorization.

55216948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13804241 (or 13804239 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 55216948 is about 7430.8107229292. The cubic root of 55216948 is about 380.7946160792.

The spelling of 55216948 in words is "fifty-five million, two hundred sixteen thousand, nine hundred forty-eight".