2157154001 has 2 divisors, whose sum is σ = 2157154002. Its totient is φ = 2157154000.

The previous prime is 2157153979. The next prime is 2157154019. The reversal of 2157154001 is 1004517512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2093154001 + 64000000 = 45751^2 + 8000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2157154001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2157154031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078577000 + 1078577001.

It is an arithmetic number, because the mean of its divisors is an integer number (1078577001).

Almost surely, 2^2157154001 is an apocalyptic number.

It is an amenable number.

2157154001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157154001 is an equidigital number, since it uses as much as digits as its factorization.

2157154001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 2157154001 is about 46445.1719880549. The cubic root of 2157154001 is about 1292.0928312512.

The spelling of 2157154001 in words is "two billion, one hundred fifty-seven million, one hundred fifty-four thousand, one".