55142361 has 6 divisors (see below), whose sum is σ = 79650090. Its totient is φ = 36761568.

The previous prime is 55142357. The next prime is 55142387. The reversal of 55142361 is 16324155.

It can be written as a sum of positive squares in only one way, i.e., 46498761 + 8643600 = 6819^2 + 2940^2 .

It is not a de Polignac number, because 55142361 - 2² = 55142357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55142341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3063456 + ... + 3063473.

It is an arithmetic number, because the mean of its divisors is an integer number (13275015).

Almost surely, 2^55142361 is an apocalyptic number.

It is an amenable number.

55142361 is a deficient number, since it is larger than the sum of its proper divisors (24507729).

55142361 is a wasteful number, since it uses less digits than its factorization.

55142361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126935 (or 6126932 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 55142361 is about 7425.7902609756. The cubic root of 55142361 is about 380.6230798192.

It can be divided in two parts, 5514 and 2361, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 55142361 in words is "fifty-five million, one hundred forty-two thousand, three hundred sixty-one".