20379501 has 12 divisors (see below), whose sum is σ = 30155580. Its totient is φ = 13254720.

The previous prime is 20379497. The next prime is 20379503. The reversal of 20379501 is 10597302.

It can be written as a sum of positive squares in 2 ways, for example, as 12257001 + 8122500 = 3501^2 + 2850^2 .

It is not a de Polignac number, because 20379501 - 2² = 20379497 is a prime.

It is a super-2 number, since 2×20379501² = 830648122018002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27246 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (2512965).

Almost surely, 2^20379501 is an apocalyptic number.

It is an amenable number.

20379501 is a deficient number, since it is larger than the sum of its proper divisors (9776079).

20379501 is a wasteful number, since it uses less digits than its factorization.

20379501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55276 (or 55273 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 20379501 is about 4514.3660684530. The cubic root of 20379501 is about 273.1478891182.

The spelling of 20379501 in words is "twenty million, three hundred seventy-nine thousand, five hundred one".