151561554 has 8 divisors (see below), whose sum is σ = 303123120. Its totient is φ = 50520516.

The previous prime is 151561547. The next prime is 151561561. The reversal of 151561554 is 455165151.

It is an interprime number because it is at equal distance from previous prime (151561547) and next prime (151561561).

It is a sphenic number, since it is the product of 3 distinct primes.

151561554 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12630124 + ... + 12630135.

It is an arithmetic number, because the mean of its divisors is an integer number (37890390).

Almost surely, 2^151561554 is an apocalyptic number.

151561554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151561554 is a wasteful number, since it uses less digits than its factorization.

151561554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25260264.

The product of its digits is 15000, while the sum is 33.

The square root of 151561554 is about 12311.0338314863. The cubic root of 151561554 is about 533.1666995920.

The spelling of 151561554 in words is "one hundred fifty-one million, five hundred sixty-one thousand, five hundred fifty-four".