55451537 has 2 divisors, whose sum is σ = 55451538. Its totient is φ = 55451536.

The previous prime is 55451521. The next prime is 55451581. The reversal of 55451537 is 73515455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29604481 + 25847056 = 5441^2 + 5084^2 .

It is a cyclic number.

It is not a de Polignac number, because 55451537 - 2⁴ = 55451521 is a prime.

It is a super-3 number, since 3×55451537³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55451497 and 55451506.

It is not a weakly prime, because it can be changed into another prime (55451507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27725768 + 27725769.

It is an arithmetic number, because the mean of its divisors is an integer number (27725769).

Almost surely, 2^55451537 is an apocalyptic number.

It is an amenable number.

55451537 is a deficient number, since it is larger than the sum of its proper divisors (1).

55451537 is an equidigital number, since it uses as much as digits as its factorization.

55451537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52500, while the sum is 35.

The square root of 55451537 is about 7446.5788789215. The cubic root of 55451537 is about 381.3331223578. Note that the first 3 decimals are identical.

The spelling of 55451537 in words is "fifty-five million, four hundred fifty-one thousand, five hundred thirty-seven".