55373149261 has 2 divisors, whose sum is σ = 55373149262. Its totient is φ = 55373149260.

The previous prime is 55373149219. The next prime is 55373149333. The reversal of 55373149261 is 16294137355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55373149225 + 36 = 235315^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 55373149261 - 2¹⁹ = 55372624973 is a prime.

It is a super-2 number, since 2×55373149261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55373149361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27686574630 + 27686574631.

It is an arithmetic number, because the mean of its divisors is an integer number (27686574631).

Almost surely, 2^55373149261 is an apocalyptic number.

It is an amenable number.

55373149261 is a deficient number, since it is larger than the sum of its proper divisors (1).

55373149261 is an equidigital number, since it uses as much as digits as its factorization.

55373149261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The spelling of 55373149261 in words is "fifty-five billion, three hundred seventy-three million, one hundred forty-nine thousand, two hundred sixty-one".