1555657053 has 16 divisors (see below), whose sum is σ = 2234158080. Its totient is φ = 959669424.

The previous prime is 1555657043. The next prime is 1555657093. The reversal of 1555657053 is 3507565551.

It is not a de Polignac number, because 1555657053 - 2⁵ = 1555657021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1555656996 and 1555657014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555657013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314901 + ... + 319802.

It is an arithmetic number, because the mean of its divisors is an integer number (139634880).

Almost surely, 2^1555657053 is an apocalyptic number.

It is an amenable number.

1555657053 is a deficient number, since it is larger than the sum of its proper divisors (678501027).

1555657053 is a wasteful number, since it uses less digits than its factorization.

1555657053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634768.

The product of its (nonzero) digits is 393750, while the sum is 42.

The square root of 1555657053 is about 39441.8185812977. The cubic root of 1555657053 is about 1158.7007483061.

The spelling of 1555657053 in words is "one billion, five hundred fifty-five million, six hundred fifty-seven thousand, fifty-three".