55973497 has 2 divisors, whose sum is σ = 55973498. Its totient is φ = 55973496.

The previous prime is 55973471. The next prime is 55973521. The reversal of 55973497 is 79437955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52359696 + 3613801 = 7236^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 55973497 - 2⁷ = 55973369 is a prime.

It is a super-3 number, since 3×55973497³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55973497.

It is not a weakly prime, because it can be changed into another prime (55977497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27986748 + 27986749.

It is an arithmetic number, because the mean of its divisors is an integer number (27986749).

Almost surely, 2^55973497 is an apocalyptic number.

It is an amenable number.

55973497 is a deficient number, since it is larger than the sum of its proper divisors (1).

55973497 is an equidigital number, since it uses as much as digits as its factorization.

55973497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1190700, while the sum is 49.

The square root of 55973497 is about 7481.5437578083. The cubic root of 55973497 is about 382.5258717745.

The spelling of 55973497 in words is "fifty-five million, nine hundred seventy-three thousand, four hundred ninety-seven".