155380351 has 4 divisors (see below), whose sum is σ = 177577552. Its totient is φ = 133183152.

The previous prime is 155380349. The next prime is 155380361. The reversal of 155380351 is 153083551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153083551 = 19 ⋅8057029.

It is a cyclic number.

It is not a de Polignac number, because 155380351 - 2¹ = 155380349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155380321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11098590 + ... + 11098603.

It is an arithmetic number, because the mean of its divisors is an integer number (44394388).

Almost surely, 2^155380351 is an apocalyptic number.

155380351 is a deficient number, since it is larger than the sum of its proper divisors (22197201).

155380351 is an equidigital number, since it uses as much as digits as its factorization.

155380351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22197200.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 155380351 is about 12465.1655023108. The cubic root of 155380351 is about 537.6075585004.

The spelling of 155380351 in words is "one hundred fifty-five million, three hundred eighty thousand, three hundred fifty-one".