354578981 has 2 divisors, whose sum is σ = 354578982. Its totient is φ = 354578980.

The previous prime is 354578963. The next prime is 354578999. The reversal of 354578981 is 189875453.

It is a balanced prime because it is at equal distance from previous prime (354578963) and next prime (354578999).

It can be written as a sum of positive squares in only one way, i.e., 309232225 + 45346756 = 17585^2 + 6734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354578981 is a prime.

It is a super-2 number, since 2×354578981² = 251452507533996722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354508981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177289490 + 177289491.

It is an arithmetic number, because the mean of its divisors is an integer number (177289491).

Almost surely, 2^354578981 is an apocalyptic number.

It is an amenable number.

354578981 is a deficient number, since it is larger than the sum of its proper divisors (1).

354578981 is an equidigital number, since it uses as much as digits as its factorization.

354578981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 354578981 is about 18830.2676826433. The cubic root of 354578981 is about 707.7898480676.

The spelling of 354578981 in words is "three hundred fifty-four million, five hundred seventy-eight thousand, nine hundred eighty-one".