55142536 has 16 divisors (see below), whose sum is σ = 105088140. Its totient is φ = 27119040.

The previous prime is 55142519. The next prime is 55142537. The reversal of 55142536 is 63524155.

It can be written as a sum of positive squares in 2 ways, for example, as 52272900 + 2869636 = 7230^2 + 1694^2 .

It is a super-2 number, since 2×55142536² = 6081398553022592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55142498 and 55142507.

It is not an unprimeable number, because it can be changed into a prime (55142537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56011 + ... + 56986.

Almost surely, 2^55142536 is an apocalyptic number.

It is an amenable number.

55142536 is a deficient number, since it is larger than the sum of its proper divisors (49945604).

55142536 is a wasteful number, since it uses less digits than its factorization.

55142536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113064 (or 113060 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 55142536 is about 7425.8020442239. The cubic root of 55142536 is about 380.6234824677.

The spelling of 55142536 in words is "fifty-five million, one hundred forty-two thousand, five hundred thirty-six".