57420551 has 4 divisors (see below), whose sum is σ = 59400600. Its totient is φ = 55440504.

The previous prime is 57420547. The next prime is 57420569. The reversal of 57420551 is 15502475.

57420551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57420551 - 2² = 57420547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1980019 = 57420551 / (5 + 7 + 4 + 2 + 0 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57420151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989981 + ... + 990038.

It is an arithmetic number, because the mean of its divisors is an integer number (14850150).

Almost surely, 2^57420551 is an apocalyptic number.

57420551 is a deficient number, since it is larger than the sum of its proper divisors (1980049).

57420551 is a wasteful number, since it uses less digits than its factorization.

57420551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980048.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 57420551 is about 7577.6349212667. The cubic root of 57420551 is about 385.7942808346.

The spelling of 57420551 in words is "fifty-seven million, four hundred twenty thousand, five hundred fifty-one".