77471053 has 4 divisors (see below), whose sum is σ = 84513888. Its totient is φ = 70428220.

The previous prime is 77471039. The next prime is 77471059. The reversal of 77471053 is 35017477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77471053 - 2⁹ = 77470541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77471059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3521401 + ... + 3521422.

It is an arithmetic number, because the mean of its divisors is an integer number (21128472).

Almost surely, 2^77471053 is an apocalyptic number.

It is an amenable number.

77471053 is a deficient number, since it is larger than the sum of its proper divisors (7042835).

77471053 is a wasteful number, since it uses less digits than its factorization.

77471053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042834.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 77471053 is about 8801.7641981594. The cubic root of 77471053 is about 426.2978604853.

The spelling of 77471053 in words is "seventy-seven million, four hundred seventy-one thousand, fifty-three".