55858825 has 24 divisors (see below), whose sum is σ = 75977280. Its totient is φ = 40401600.

The previous prime is 55858819. The next prime is 55858837. The reversal of 55858825 is 52885855.

55858825 = 1285² + 1286² + ... + 1317².

It is not a de Polignac number, because 55858825 - 2¹¹ = 55856777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62532 + ... + 63418.

It is an arithmetic number, because the mean of its divisors is an integer number (3165720).

Almost surely, 2^55858825 is an apocalyptic number.

55858825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55858825 is a deficient number, since it is larger than the sum of its proper divisors (20118455).

55858825 is a wasteful number, since it uses less digits than its factorization.

55858825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1132 counting only the distinct ones).

The product of its digits is 640000, while the sum is 46.

The square root of 55858825 is about 7473.8761696994. The cubic root of 55858825 is about 382.2644683220.

The spelling of 55858825 in words is "fifty-five million, eight hundred fifty-eight thousand, eight hundred twenty-five".