155261473 has 2 divisors, whose sum is σ = 155261474. Its totient is φ = 155261472.

The previous prime is 155261461. The next prime is 155261501. The reversal of 155261473 is 374162551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134722449 + 20539024 = 11607^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 155261473 - 2¹³ = 155253281 is a prime.

It is a super-2 number, since 2×155261473² = 48212249996259458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155261443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77630736 + 77630737.

It is an arithmetic number, because the mean of its divisors is an integer number (77630737).

Almost surely, 2^155261473 is an apocalyptic number.

It is an amenable number.

155261473 is a deficient number, since it is larger than the sum of its proper divisors (1).

155261473 is an equidigital number, since it uses as much as digits as its factorization.

155261473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 155261473 is about 12460.3961815024. The cubic root of 155261473 is about 537.4704197170.

The spelling of 155261473 in words is "one hundred fifty-five million, two hundred sixty-one thousand, four hundred seventy-three".