55145934 has 56 divisors (see below), whose sum is σ = 125520120. Its totient is φ = 18160848.

The previous prime is 55145933. The next prime is 55145939. The reversal of 55145934 is 43954155.

55145934 is a `hidden beast` number, since 55 + 14 + 593 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55145933) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 158749 + ... + 159095.

Almost surely, 2^55145934 is an apocalyptic number.

55145934 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55145934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62760060).

55145934 is an abundant number, since it is smaller than the sum of its proper divisors (70374186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55145934 is a wasteful number, since it uses less digits than its factorization.

55145934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 461 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 55145934 is about 7426.0308375336. The cubic root of 55145934 is about 380.6313005824.

The spelling of 55145934 in words is "fifty-five million, one hundred forty-five thousand, nine hundred thirty-four".