55253131 has 2 divisors, whose sum is σ = 55253132. Its totient is φ = 55253130.

The previous prime is 55253101. The next prime is 55253137. The reversal of 55253131 is 13135255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55253131 - 2¹³ = 55244939 is a prime.

It is a super-2 number, since 2×55253131² = 6105816970606322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55253096 and 55253105.

It is not a weakly prime, because it can be changed into another prime (55253137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626565 + 27626566.

It is an arithmetic number, because the mean of its divisors is an integer number (27626566).

Almost surely, 2^55253131 is an apocalyptic number.

55253131 is a deficient number, since it is larger than the sum of its proper divisors (1).

55253131 is an equidigital number, since it uses as much as digits as its factorization.

55253131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 25.

The square root of 55253131 is about 7433.2449845273. The cubic root of 55253131 is about 380.8777746238.

Adding to 55253131 its reverse (13135255), we get a palindrome (68388386).

The spelling of 55253131 in words is "fifty-five million, two hundred fifty-three thousand, one hundred thirty-one".