57421629 has 24 divisors (see below), whose sum is σ = 90548640. Its totient is φ = 36263376.

The previous prime is 57421627. The next prime is 57421673. The reversal of 57421629 is 92612475.

57421629 is a `hidden beast` number, since 5 + 7 + 4 + 21 + 629 = 666.

It is not a de Polignac number, because 57421629 - 2¹ = 57421627 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57421593 and 57421602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57421627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1602 + ... + 10835.

It is an arithmetic number, because the mean of its divisors is an integer number (3772860).

Almost surely, 2^57421629 is an apocalyptic number.

It is an amenable number.

57421629 is a deficient number, since it is larger than the sum of its proper divisors (33127011).

57421629 is a wasteful number, since it uses less digits than its factorization.

57421629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471 (or 12459 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 57421629 is about 7577.7060513060. The cubic root of 57421629 is about 385.7966950901.

The spelling of 57421629 in words is "fifty-seven million, four hundred twenty-one thousand, six hundred twenty-nine".