55067731 has 2 divisors, whose sum is σ = 55067732. Its totient is φ = 55067730.

The previous prime is 55067717. The next prime is 55067741. The reversal of 55067731 is 13776055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55067731 - 2⁵ = 55067699 is a prime.

It is a super-2 number, since 2×55067731² = 6064909994976722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55067741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27533865 + 27533866.

It is an arithmetic number, because the mean of its divisors is an integer number (27533866).

Almost surely, 2^55067731 is an apocalyptic number.

55067731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55067731 is an equidigital number, since it uses as much as digits as its factorization.

55067731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 55067731 is about 7420.7635051927. The cubic root of 55067731 is about 380.4512897804.

The spelling of 55067731 in words is "fifty-five million, sixty-seven thousand, seven hundred thirty-one".