55129325 has 12 divisors (see below), whose sum is σ = 68477760. Its totient is φ = 44027760.

The previous prime is 55129313. The next prime is 55129337. The reversal of 55129325 is 52392155.

It is an interprime number because it is at equal distance from previous prime (55129313) and next prime (55129337).

It is not a de Polignac number, because 55129325 - 2⁴ = 55129309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55129291 and 55129300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16442 + ... + 19508.

It is an arithmetic number, because the mean of its divisors is an integer number (5706480).

Almost surely, 2^55129325 is an apocalyptic number.

It is an amenable number.

55129325 is a deficient number, since it is larger than the sum of its proper divisors (13348435).

55129325 is a wasteful number, since it uses less digits than its factorization.

55129325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796 (or 3791 counting only the distinct ones).

The product of its digits is 13500, while the sum is 32.

The square root of 55129325 is about 7424.9124573964. The cubic root of 55129325 is about 380.5930835608.

The spelling of 55129325 in words is "fifty-five million, one hundred twenty-nine thousand, three hundred twenty-five".