55145252 has 6 divisors (see below), whose sum is σ = 96504198. Its totient is φ = 27572624.

The previous prime is 55145213. The next prime is 55145291. The reversal of 55145252 is 25254155.

It is an interprime number because it is at equal distance from previous prime (55145213) and next prime (55145291).

It can be written as a sum of positive squares in only one way, i.e., 44943616 + 10201636 = 6704^2 + 3194^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6893153 + ... + 6893160.

It is an arithmetic number, because the mean of its divisors is an integer number (16084033).

Almost surely, 2^55145252 is an apocalyptic number.

It is an amenable number.

55145252 is a deficient number, since it is larger than the sum of its proper divisors (41358946).

55145252 is a wasteful number, since it uses less digits than its factorization.

55145252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13786317 (or 13786315 counting only the distinct ones).

The product of its digits is 10000, while the sum is 29.

The square root of 55145252 is about 7425.9849178409. The cubic root of 55145252 is about 380.6297314633.

The spelling of 55145252 in words is "fifty-five million, one hundred forty-five thousand, two hundred fifty-two".