55861975 has 24 divisors (see below), whose sum is σ = 77182560. Its totient is φ = 39822720.

The previous prime is 55861951. The next prime is 55861999. The reversal of 55861975 is 57916855.

It is an interprime number because it is at equal distance from previous prime (55861951) and next prime (55861999).

It is not a de Polignac number, because 55861975 - 2⁵ = 55861943 is a prime.

It is a congruent number.

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, 6462 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (3215940).

Almost surely, 2^55861975 is an apocalyptic number.

55861975 is a deficient number, since it is larger than the sum of its proper divisors (21320585).

55861975 is a wasteful number, since it uses less digits than its factorization.

55861975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979 (or 5974 counting only the distinct ones).

The product of its digits is 378000, while the sum is 46.

The square root of 55861975 is about 7474.0869007525. The cubic root of 55861975 is about 382.2716537604.

The spelling of 55861975 in words is "fifty-five million, eight hundred sixty-one thousand, nine hundred seventy-five".