55102277 has 4 divisors (see below), whose sum is σ = 55196736. Its totient is φ = 55007820.

The previous prime is 55102259. The next prime is 55102297. The reversal of 55102277 is 77220155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77220155 = 5 ⋅15444031.

It is a cyclic number.

It is not a de Polignac number, because 55102277 - 2¹⁶ = 55036741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55102217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46349 + ... + 47522.

It is an arithmetic number, because the mean of its divisors is an integer number (13799184).

Almost surely, 2^55102277 is an apocalyptic number.

It is an amenable number.

55102277 is a deficient number, since it is larger than the sum of its proper divisors (94459).

55102277 is an equidigital number, since it uses as much as digits as its factorization.

55102277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94458.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 55102277 is about 7423.0907983131. The cubic root of 55102277 is about 380.5308301489.

The spelling of 55102277 in words is "fifty-five million, one hundred two thousand, two hundred seventy-seven".