1655421053 has 32 divisors (see below), whose sum is σ = 2068198272. Its totient is φ = 1301760000.

The previous prime is 1655420971. The next prime is 1655421083. The reversal of 1655421053 is 3501245561.

It is a cyclic number.

It is not a de Polignac number, because 1655421053 - 2¹⁰ = 1655420029 is a prime.

It is a super-3 number, since 3×1655421053³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655421083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608825 + ... + 611537.

It is an arithmetic number, because the mean of its divisors is an integer number (64631196).

Almost surely, 2^1655421053 is an apocalyptic number.

1655421053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1655421053 is a deficient number, since it is larger than the sum of its proper divisors (412777219).

1655421053 is a wasteful number, since it uses less digits than its factorization.

1655421053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1655421053 is about 40686.8658537371. The cubic root of 1655421053 is about 1182.9584514713.

The spelling of 1655421053 in words is "one billion, six hundred fifty-five million, four hundred twenty-one thousand, fifty-three".