155433461 has 2 divisors, whose sum is σ = 155433462. Its totient is φ = 155433460.

The previous prime is 155433457. The next prime is 155433463. The reversal of 155433461 is 164334551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133287025 + 22146436 = 11545^2 + 4706^2 .

It is an emirp because it is prime and its reverse (164334551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155433461 - 2² = 155433457 is a prime.

Together with 155433463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155433463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77716730 + 77716731.

It is an arithmetic number, because the mean of its divisors is an integer number (77716731).

Almost surely, 2^155433461 is an apocalyptic number.

It is an amenable number.

155433461 is a deficient number, since it is larger than the sum of its proper divisors (1).

155433461 is an equidigital number, since it uses as much as digits as its factorization.

155433461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 155433461 is about 12467.2956570381. The cubic root of 155433461 is about 537.6688040928.

The spelling of 155433461 in words is "one hundred fifty-five million, four hundred thirty-three thousand, four hundred sixty-one".