20755071 has 6 divisors (see below), whose sum is σ = 29979560. Its totient is φ = 13836708.

The previous prime is 20755069. The next prime is 20755073. The reversal of 20755071 is 17055702.

It is an interprime number because it is at equal distance from previous prime (20755069) and next prime (20755073).

It is not a de Polignac number, because 20755071 - 2¹ = 20755069 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 (20755073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1153051 + ... + 1153068.

Almost surely, 2^20755071 is an apocalyptic number.

20755071 is a deficient number, since it is larger than the sum of its proper divisors (9224489).

20755071 is a wasteful number, since it uses less digits than its factorization.

20755071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306125 (or 2306122 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 20755071 is about 4555.7733701316. The cubic root of 20755071 is about 274.8156163459.

It can be divided in two parts, 207 and 55071, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 20755071 in words is "twenty million, seven hundred fifty-five thousand, seventy-one".